Usage Note
Convencer has a spelling change in the yo form: convenzo (not convenco), because the c softens to z before -o and -a to preserve the /s/ sound (seseo). It takes de before an infinitive or noun: convencer a alguien de algo. The adjective convincente (convincing) is widely used in written and spoken registers.
Examples
"No logré convencerla de venir."
Natural Translation
I did not manage to convince her to come.
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