脱退 だったい
dattai

Noun
Suru Verb

1. withdrawal (e.g. from an organization); secession; leaving; pulling out

Intransitive
きみ ただちにクラブを脱退 だったいしたほうがよい。
kimiwa tadachini kurabuo dattai shita hōga yoi.
You may as well withdraw from the club right away.