back down

(noun) a retraction of a previously held position. Synonyms: withdrawal, backdown, climb-down.

(verb) move backwards from a certain position. Synonyms: back up, back off, back down. Example: "The bully had to back down."

(verb) remove oneself from an obligation. Synonyms: chicken out, back off, pull out, back down, bow out. Example: "He bowed out when he heard how much work was involved."