一いっ発ぱつかます

expression, godan verb (-su)

land a punch; hit someone once

Colloquial and somewhat rough; implies delivering a single, forceful blow. Often used in confrontational or fighting contexts.

• あいつ、いきなり一いっ発ぱつかましてきたんだ。

  That guy suddenly landed a punch on me.

• 文もん句くがあるなら一いっ発ぱつかますぞ。

  If you've got a complaint, I'll give you a punch.

expression, godan verb (-su)

intimidate; put the frighteners on

Idiomatic; means to threaten or scare someone, often with a show of force or a verbal warning. Can be used metaphorically.

• 借しゃっ金きん取とりが来きて一いっ発ぱつかまされた。

  A debt collector came and intimidated me.

• 彼かれは相あい手てを一いっ発ぱつかまして黙だまらせた。

  He intimidated the other guy into silence.