いっする
issuru

Suru Verb

1. to lose (a chance); to miss (a chance)

きみ常軌 じょうき いっしているよ。
kimiwa jōkio isshite iruyo.
You are way off track.
Suru Verb

2. to overlook; to omit; to forget

Suru Verb

3. to deviate

Other forms: