verb
to give up (something formerly adhered to) irrevocably and usually solemnly or formally
an immigrant solemnly abjuring allegiance to his former country
Synonyms: forswear, palinode, recall, recant, retract, take back, unsay, withdraw
Related Word: disavow, disown, renounce, repudiate; abandon, desert, forsake; cede, relinquish, surrender
Idioms: eat one's words