Cop out
WordNet
verb
(1) Choose not to do something, as out of fear of failing
"She copped out when she was supposed to get into the hang glider"
WiktionaryText
Verb
- To avoid or shirk, either by failing to perform, or by performing in a grossly insufficient, negligent, or superficial manner.
- Faced with the prospect of cooking for himself, his first thought was to cop out and order a pizza.