cop out
[phrasal verb] informal 1
: to not do something that you are expected to do退出；逃避；回避 -
She said she would come, but then she copped out at the last minute.她说她会来，但在最后一刻她又不来了。
-
You'd better not cop out on me!你最好不要躲着我！
2
: to fail to deal with a problem or situation（对问题）解决不力 — see also cop-out