wimp out

verb

1. informal,  (intr, adverb) to fail to do or complete something through fear or lack of conviction

Related Words

• abandon 
• admit 
• back off 
• back out 
• backtrack 
• balk 
• cancel 
• cave in 
• concede 
• give in 
• give up 
• pull back 
• pull out 
• renege 
• retreat 
• surrender 
• take back 
• withdraw