convencer
/kohn-vehn-SEHR/
to convince

To convencer means to persuade someone else to agree with an idea or plan.
convencer(verb)
to convince
?to persuade someone to act or agree
,to persuade
?to influence someone's decision
to talk into
?informal persuasion
📝 In Action
Intenté convencerlo de que viniera a la fiesta.
A2I tried to convince him to come to the party.
Ella me convenció de que era una buena idea invertir.
B1She persuaded me that investing was a good idea.
El vendedor nos convenció fácilmente con su demostración.
A2The salesperson convinced us easily with his demonstration.
💡 Grammar Points
The 'C' to 'ZC' Spelling Change
In the 'yo' form of the present tense, the 'c' changes to 'zc' (convenzo). This happens to keep the 'c' sounding like an 's' or 'th' sound before an 'o' or 'a'.
Using 'de' or 'que'
When convincing someone to do an action, you usually use 'de' followed by the action: 'convencer [a alguien] de [hacer algo]'. You can also use 'que' followed by a full sentence: 'convencer [a alguien] de que [sentence]'
❌ Common Pitfalls
Forgetting the ZC
Mistake: "Yo convenco (Incorrect)"
Correction: Yo convenzo (Correct). Remember the 'zc' ending in the 'yo' form and the entire present subjunctive (convenza).
⭐ Usage Tips
Using 'a' for People
When the person you are convincing is mentioned, always use the personal 'a': 'Convencí a mi jefe.' (I convinced my boss.)

The reflexive form, convencerse, means to be convinced or to persuade oneself of something.
convencer(verb)
to be convinced
?reflexive usage (convencerse)
,to be sure
?to have certainty about a fact
to satisfy oneself
?to accept the truth
📝 In Action
Me convencí de que no era mi culpa.
B1I convinced myself (I became sure) that it wasn't my fault.
Cuando vi las pruebas, me convencí de la verdad.
B1When I saw the evidence, I became convinced of the truth.
Ella nunca se convencerá de que está equivocada.
B2She will never be convinced that she is wrong.
💡 Grammar Points
Reflexive Use for Self-Belief
When you use 'convencerse' (with a pronoun like 'me,' 'te,' 'se'), it means you are persuading yourself, or coming to a firm conclusion in your own mind.
⭐ Usage Tips
Past Participle as Adjective
The most common way to express a state of being convinced is using the past participle as an adjective with 'estar': 'Estoy convencido/a' (I am convinced).
🔄 Conjugations
indicative
present
imperfect
preterite
subjunctive
present
imperfect
✏️ Quick Practice
💡 Quick Quiz: convencer
Question 1 of 2
Which sentence correctly uses the spelling rule for 'convencer' in the present tense?
📚 More Resources
Frequently Asked Questions
What is the difference between 'convencer' and 'persuadir'?
They are very close synonyms and often interchangeable. 'Convencer' often emphasizes winning an argument through logic and evidence (convincing the mind), while 'persuadir' sometimes implies appealing to feelings or desires (persuading the will). However, in everyday speech, you can usually use either one.
Does 'convencer' require the subjunctive mood?
No. Unlike verbs that express desires or commands (like 'querer' or 'pedir'), 'convencer' states a fact (that someone *is* convinced or *was* convinced). Therefore, the second verb usually stays in the normal indicative mood: 'Me convenció de que **tiene** razón' (He convinced me that he **is** right).