だったい脱退dattai
1.

The act of leaving or resigning from a group or organization voluntarily, often indicating a desire to no longer be associated with it.

2.

A formal decision to discontinue membership in an association or collective, typically signifying a shift in allegiance or personal choice.

3.

The process of withdrawing from a previously held position within a group, which can encompass social, professional, or political organizations.

4.

The act of disassociating oneself from a collective body, reflecting changes in beliefs, circumstances, or intentions.

Example:

君は直ちにクラブを脱退したほうがよい。