swear Synonyms

curse depose cuss affirm blaspheme testify declare undertake verify avow damn vow depone imprecate execrate warrant guarantee pledge assert take an oath assure promise attest aver swan bank rely scold renounce vowed reckon sworn vouchsafe vouch state trust sware swore swearing warranting curses unsworn yaff make an oath swear an oath curse out call upon four-letter word give up bear witness