How to Say "oaths" in Spanish
The Spanish word for “oaths” is “votos” — B2 level.
English → SpanishB2
nounB2formal
formal pledges

Examples
Los novios intercambiaron sus votos matrimoniales.
The bride and groom exchanged their marriage vows.
La monja hizo votos de pobreza y obediencia.
The nun took vows of poverty and obedience.
Romper los votos es una traición a la promesa.
Breaking the vows is a betrayal of the promise.
Types of Vows
In religious contexts, 'votos' are often followed by 'de' plus the virtue being promised: 'votos de castidad' (vows of chastity).
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