Synonyms for Swear:
n.abuse. vouchsafe, attest, warrant, undertake, vouch, give (someone) your word, swear by. justify. •swear (noun)
depone, rely, blaspheme, avow, depose, trust, bank, swan, aver, cuss, curse, assert, verify, imprecate, affirm.
cuss, blaspheme, nag, curse, scold.
•declare under oath (verb)
affirm, avow, vow, attest, trust, swear by, promise, warrant, vouch, assert, depose.
vow, consent, stipulate, assure, pledge, agree, promise, guarantee.
•speak profanely; be vulgar (verb)
curse, cuss, imprecate, blaspheme.
undertake. warrant, attest. abuse. •assert
•Other relevant words:
depose, vouch, trust, imprecate, undertake, justify, swear by, rely, avow, swan, attest, abuse, assert, bank, affirm, vouchsafe, depone, aver, warrant, verify.
Usage examples for swear
Your looks'll swear it's the truth. – Lonesome Land by B. M. Bower