v fail to do something; leave something undone
v be unsuccessful
v disappoint, prove undependable to; abandon, forsake
v stop operating or functioning
v be unable
v judge unacceptable
v fail to get a passing grade
v fall short in what is expected
v become bankrupt or insolvent; fail financially and close
v prove insufficient
v get worse
a. 已失败的
[计] 失败的