How to Say "to vanquish" in Spanish
The Spanish word for “to vanquish” is “derrotar” — B1 level. This is a very common word in everyday Spanish.

Examples
Nuestro equipo derrotó al campeón el año pasado.
Our team defeated the champion last year.
El ajedrecista derrotó a su oponente en solo diez movimientos.
The chess player beat his opponent in only ten moves.
The 'Personal A'
When you use this word to talk about defeating a specific person or a group of people, you must use the word 'a' before them. Example: 'Derrotaron a los gigantes'.
Ganar vs. Derrotar
Mistake: “Using 'ganar' when referring to the person you beat.”
Correction: Say 'Derroté a mi hermano' (I defeated my brother) instead of 'Gané a mi hermano'. You 'ganar' (win) a trophy or a game, but you 'derrotar' (defeat) an opponent.
Related Translations
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