べけ

beke

auxiliary verb 未然形

べけ is the negative stem of べし — failure, futility, uselessness, no good.

Classical Japanese — you’ll mostly meet it in older texts and set phrases

How it’s built

べしべけ

Negative stem (未然形). Never used alone — it is the base for ない (not), れる/られる (passive), せる/させる (causative): 書か → 書かない.

べし is a classical japanese conjugation, so it follows that pattern.