shrink backvi phrasalphrasal verb, intransitive: Verb with adverb(s) or preposition(s), having special meaning and not taking direct object--for example, "make up" [=reconcile]: "After they fought, they made up."
(back away)
退缩 tuì suō
畏缩 wèi suō
The cat shrank back when Ian tried to approach it.