blow off


Definition
(1) to move something from a surface with wind; "She picked up an old book and blew the dust off the cover." (2) to remove, detach or destroy a part of something by shooting it with a firearm or making it explode; "The robber blew the door off the safe with a bomb." (3) to decide not to attend an arranged engagement; "I'm going to blow off George's party, his friends are all so boring."

Synonym
shirk