chicken out

Từ điển WordNet v3.1 - WordNet Dictionary

verb

remove oneself from an obligation
- He bowed out when he heard how much work was involved
• Syn:
back off, pull out, back down, bow out
• Hypernyms:
retire, withdraw
• Hyponyms:
resile
• Verb Group:
pull out, get out
• Verb Frames:
- Somebody ----s
- Somebody ----s PP