Non-finite forms
Infinitivo and Gerundio
| Form | Spanish | Use |
|---|---|---|
| Infinitivo | avisar | Dictionary form and base form for many compound structures. |
| Gerundio | avisando | Used with estar for progressive forms, for example estar avisando. |
avisar is a regular Spanish -AR verb meaning inform / warn / let know. In the present tense: yo aviso, tú avisas, él/ella avisa, nosotros avisamos, vosotros avisáis, ellos avisan. Full conjugation across 18 tenses below.
Infinitivo and Gerundio
| Form | Spanish | Use |
|---|---|---|
| Infinitivo | avisar | Dictionary form and base form for many compound structures. |
| Gerundio | avisando | Used with estar for progressive forms, for example estar avisando. |
Present
| Pronoun | Form | Context |
|---|---|---|
| yo | aviso | Yo aviso cuando llego.I let you know when I arrive. |
| tú | avisas | Tú avisas a todos con tiempo.You inform everyone in advance. |
| él | avisa | Él avisa si hay un cambio.He lets us know if there is a change. |
| nosotros | avisamos | Nosotros avisamos de cualquier problema.We warn about any problem. |
| vosotros | avisáis | Vosotros avisáis antes de venir.You let us know before coming. |
| ellos | avisan | Ellos avisan a la prensa enseguida.They inform the press right away. |
Present Perfect
| Pronoun | Form | Context |
|---|---|---|
| yo | he avisado | Yo he avisado cuando llegué.I have let you know when I arrived. |
| tú | has avisado | Tú has avisado a todos ya.You have informed everyone already. |
| él | ha avisado | Él ha avisado del cambio.He has informed us about the change. |
| nosotros | hemos avisado | Nosotros hemos avisado del problema.We have warned about the problem. |
| vosotros | habéis avisado | Vosotros habéis avisado antes de venir.You have let us know before coming. |
| ellos | han avisado | Ellos han avisado a la prensa.They have informed the press. |
Preterite
| Pronoun | Form | Context |
|---|---|---|
| yo | avisé | Ayer yo avisé cuando llegué.Yesterday I let you know when I arrived. |
| tú | avisaste | Tú avisaste a todos con tiempo.You informed everyone in advance. |
| él | avisó | Él avisó del cambio.He informed us about the change. |
| nosotros | avisamos | Nosotros avisamos del problema.We warned about the problem. |
| vosotros | avisasteis | Vosotros avisasteis antes de venir.You let us know before coming. |
| ellos | avisaron | Ellos avisaron a la prensa.They informed the press. |
Imperfect
| Pronoun | Form | Context |
|---|---|---|
| yo | avisaba | Yo avisaba siempre cuando llegaba.I used to let you know whenever I arrived. |
| tú | avisabas | Tú avisabas a todos con tiempo.You used to inform everyone in advance. |
| él | avisaba | Él avisaba de cualquier cambio.He used to inform us of any change. |
| nosotros | avisábamos | Nosotros avisábamos de los problemas antes.We used to warn about problems beforehand. |
| vosotros | avisabais | Vosotros avisabais antes de venir.You used to let us know before coming. |
| ellos | avisaban | Ellos avisaban a la prensa enseguida.They used to inform the press right away. |
Past Perfect
| Pronoun | Form | Context |
|---|---|---|
| yo | había avisado | Yo había avisado antes de llegar.I had let you know before arriving. |
| tú | habías avisado | Tú habías avisado a todos ya.You had informed everyone already. |
| él | había avisado | Él había avisado del cambio previamente.He had informed us about the change previously. |
| nosotros | habíamos avisado | Nosotros habíamos avisado del problema antes.We had warned about the problem before. |
| vosotros | habíais avisado | Vosotros habíais avisado esa mañana.You had let us know that morning. |
| ellos | habían avisado | Ellos habían avisado a la prensa antes.They had informed the press before. |
Preterite Anterior
| Pronoun | Form | Context |
|---|---|---|
| yo | hube avisado | Cuando yo hube avisado, se quedaron tranquilos.When I had let them know, they felt calm. |
| tú | hubiste avisado | En cuanto tú hubiste avisado a todos, empezó la reunión.As soon as you had informed everyone, the meeting started. |
| él | hubo avisado | Después de que él hubo avisado del cambio, salimos.After he had informed us about the change, we left. |
| nosotros | hubimos avisado | Apenas nosotros hubimos avisado del problema, actuaron.As soon as we had warned about the problem, they acted. |
| vosotros | hubisteis avisado | Una vez que vosotros hubisteis avisado, se prepararon.Once you had let them know, they got ready. |
| ellos | hubieron avisado | Cuando ellos hubieron avisado a la prensa, empezó el debate.When they had informed the press, the debate began. |
Future
| Pronoun | Form | Context |
|---|---|---|
| yo | avisaré | Yo avisaré cuando llegue.I will let you know when I arrive. |
| tú | avisarás | Tú avisarás a todos mañana.You will inform everyone tomorrow. |
| él | avisará | Él avisará si hay un cambio.He will let us know if there is a change. |
| nosotros | avisaremos | Nosotros avisaremos del problema a tiempo.We will warn about the problem in time. |
| vosotros | avisaréis | Vosotros avisaréis antes de venir.You will let us know before coming. |
| ellos | avisarán | Ellos avisarán a la prensa pronto.They will inform the press soon. |
Future Perfect
| Pronoun | Form | Context |
|---|---|---|
| yo | habré avisado | Para entonces yo habré avisado ya.By then I will have let you know already. |
| tú | habrás avisado | Tú habrás avisado a todos para esa hora.You will have informed everyone by that time. |
| él | habrá avisado | Él habrá avisado del cambio ya.He will have informed us about the change already. |
| nosotros | habremos avisado | Nosotros habremos avisado del problema antes.We will have warned about the problem beforehand. |
| vosotros | habréis avisado | Vosotros habréis avisado para entonces.You will have let us know by then. |
| ellos | habrán avisado | Ellos habrán avisado a la prensa ya.They will have informed the press already. |
Conditional
| Pronoun | Form | Context |
|---|---|---|
| yo | avisaría | Yo avisaría si supiera algo.I would let you know if I knew something. |
| tú | avisarías | Tú avisarías a todos sin tardar.You would inform everyone without delay. |
| él | avisaría | Él avisaría de cualquier cambio.He would let us know about any change. |
| nosotros | avisaríamos | Nosotros avisaríamos del problema antes.We would warn about the problem earlier. |
| vosotros | avisaríais | Vosotros avisaríais con tiempo.You would let us know in advance. |
| ellos | avisarían | Ellos avisarían a la prensa si hiciera falta.They would inform the press if necessary. |
Conditional Perfect
| Pronoun | Form | Context |
|---|---|---|
| yo | habría avisado | Yo habría avisado si hubiera sabido algo.I would have let you know if I had known something. |
| tú | habrías avisado | Tú habrías avisado a todos sin tardar.You would have informed everyone without delay. |
| él | habría avisado | Él habría avisado de cualquier cambio.He would have let us know about any change. |
| nosotros | habríamos avisado | Nosotros habríamos avisado del problema antes.We would have warned about the problem earlier. |
| vosotros | habríais avisado | Vosotros habríais avisado con tiempo.You would have let us know in advance. |
| ellos | habrían avisado | Ellos habrían avisado a la prensa si hubiera hecho falta.They would have informed the press if it had been necessary. |
Present Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | avise | Es bueno que yo avise cuando llegue.It is good that I let you know when I arrive. |
| tú | avises | Quiero que tú avises a todos.I want you to inform everyone. |
| él | avise | Es importante que él avise del cambio.It is important that he let us know about the change. |
| nosotros | avisemos | Deseo que nosotros avisemos del problema a tiempo.I wish that we warn about the problem in time. |
| vosotros | aviséis | Es mejor que vosotros aviséis antes.It is better that you let us know beforehand. |
| ellos | avisen | Temo que ellos no avisen a la prensa.I fear that they may not inform the press. |
Present Perfect Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | haya avisado | Dudo que yo haya avisado ya.I doubt that I have let you know already. |
| tú | hayas avisado | No creo que tú hayas avisado a todos todavía.I do not think that you have informed everyone yet. |
| él | haya avisado | Es posible que él haya avisado del cambio.It is possible that he has informed us about the change. |
| nosotros | hayamos avisado | Es probable que nosotros hayamos avisado del problema.It is likely that we have warned about the problem. |
| vosotros | hayáis avisado | No parece que vosotros hayáis avisado aún.It does not seem that you have let us know yet. |
| ellos | hayan avisado | Puede que ellos hayan avisado a la prensa.They may have informed the press. |
Imperfect Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | avisara | Si yo avisara antes, llegarían preparados.If I let them know earlier, they would arrive prepared. |
| tú | avisaras | Si tú avisaras a todos, evitaríamos el caos.If you informed everyone, we would avoid the chaos. |
| él | avisara | Si él avisara del cambio, no habría dudas.If he let us know about the change, there would be no doubts. |
| nosotros | avisáramos | Si nosotros avisáramos del problema, actuarían antes.If we warned about the problem, they would act earlier. |
| vosotros | avisarais | Si vosotros avisarais con tiempo, iríamos tranquilos.If you let us know in advance, we would go calmly. |
| ellos | avisaran | Si ellos avisaran a la prensa, todo sería público.If they informed the press, everything would be public. |
Past Perfect Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | hubiera avisado | Si yo hubiera avisado antes, habrían llegado preparados.If I had let them know earlier, they would have arrived prepared. |
| tú | hubieras avisado | Si tú hubieras avisado a todos, habríamos evitado el caos.If you had informed everyone, we would have avoided the chaos. |
| él | hubiera avisado | Si él hubiera avisado del cambio, no habría habido dudas.If he had let us know about the change, there would have been no doubts. |
| nosotros | hubiéramos avisado | Si nosotros hubiéramos avisado del problema, habrían actuado antes.If we had warned about the problem, they would have acted earlier. |
| vosotros | hubierais avisado | Si vosotros hubierais avisado con tiempo, habríamos ido tranquilos.If you had let us know in advance, we would have gone calmly. |
| ellos | hubieran avisado | Si ellos hubieran avisado a la prensa, todo habría sido público.If they had informed the press, everything would have been public. |
Future Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | avisare | Si algún día yo avisare tarde, te escribiré.If someday I should let you know late, I will write to you. |
| tú | avisares | Si tú avisares a todos, vendrán preparados.If you should inform everyone, they will come prepared. |
| él | avisare | Si él avisare del cambio, nos adaptaremos.If he should let us know about the change, we will adapt. |
| nosotros | avisáremos | Si nosotros avisáremos del problema, podrán reaccionar.If we should warn about the problem, they will be able to react. |
| vosotros | avisareis | Si vosotros avisareis antes, iremos mejor.If you should let us know beforehand, we will go better. |
| ellos | avisaren | Si ellos avisaren a la prensa, habrá ruido.If they should inform the press, there will be noise. |
Future Perfect Subjunctive
| Pronoun | Form | Context |
|---|---|---|
| yo | hubiere avisado | Cuando yo hubiere avisado, saldréis tranquilos.When I shall have let you know, you will leave calmly. |
| tú | hubieres avisado | Cuando tú hubieres avisado a todos, empezaremos.When you shall have informed everyone, we will begin. |
| él | hubiere avisado | Cuando él hubiere avisado del cambio, decidiremos.When he shall have let us know about the change, we will decide. |
| nosotros | hubiéremos avisado | Cuando nosotros hubiéremos avisado del problema, reaccionarán.When we shall have warned about the problem, they will react. |
| vosotros | hubiereis avisado | Cuando vosotros hubiereis avisado antes, os esperaremos.When you shall have let us know beforehand, we will wait for you. |
| ellos | hubieren avisado | Cuando ellos hubieren avisado a la prensa, empezará todo.When they shall have informed the press, everything will begin. |
Affirmative Imperative
| Pronoun | Form | Context |
|---|---|---|
| yo | - | — |
| tú | avisa | Tú, avisa cuando llegues.You, let me know when you arrive. |
| él | avise | Que él avise a todos del cambio.Let him inform everyone about the change. |
| nosotros | avisemos | avisemos del problema ahora.Let us warn about the problem now. |
| vosotros | avisad | Vosotros, avisad antes de venir.You, let us know before coming. |
| ellos | avisen | Que ellos avisen a la prensa.Let them inform the press. |
Negative Imperative
| Pronoun | Form | Context |
|---|---|---|
| yo | - | — |
| tú | no avises | No no avises tarde.Do not let us know late. |
| él | no avise | Que él no no avise sin pruebas.Let him not inform without evidence. |
| nosotros | no avisemos | No no avisemos del problema con miedo.Let us not warn about the problem with fear. |
| vosotros | no aviséis | No no aviséis a todos por error.Do not inform everyone by mistake. |
| ellos | no avisen | Que ellos no no avisen a la prensa todavía.Let them not inform the press yet. |
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Yo ___ cuando llego.
I let you know when I arrive.
Use Presente for facts, habits, current states, and regular actions.
Formation
Pattern
Examples
Presente is the base system. Master the endings first, then handle irregular yo forms and stem changes.
Concepts that come up every time you conjugate avisar. Each is a short, focused guide.
Short, direct answers to what learners search most about avisar.
Continue with verbs that share the same ending and difficulty band.