swear Antonyms
challenge
reject
repudiate
congratulations
break one's promise
break one's word
take the fifth
abdicate from
back away from the pledge
backtrack on
break the pledge
cast doubt
cast doubt on
refute
oppose
mistrust
confute
contradict
controvert
deny
disagree
disavow
disclaim
disprove
dispute
distrust
gainsay
lie
change allegiances