swear
US /swer/
UK /swer/

1.
jurer, sacrer
to use offensive language, especially as an expression of anger or frustration
:
•
He tends to swear a lot when he's angry.
Il a tendance à beaucoup jurer quand il est en colère.
•
Please don't swear in front of the children.
S’il vous plaît, ne jurez pas devant les enfants.
2.
jurer, prêter serment
to make a solemn promise, often by invoking a divine being or a sacred object
:
•
I swear to tell the truth, the whole truth, and nothing but the truth.
Je jure de dire la vérité, toute la vérité, rien que la vérité.
•
She made him swear on the Bible.
Elle lui a fait jurer sur la Bible.