(いっぱつ)

いっぱつ
noun
one shot; one blow; one try
quantityaction
1. one shot, one blow
A single shot (gun), punch, or strike.
一発(いっぱつ)(なぐ)った
I punched him once.
(じゅう)一発(いっぱつ)()った
I fired one shot.
We launched one firework.
2. one try, in one attempt
Doing or achieving something in a single attempt.
一発(いっぱつ)合格(ごうかく)した
I passed on the first try.
一発(いっぱつ)勝負(しょうぶ)だ。
It's do or die.
一発(いっぱつ)()めたい
I want to nail it on the first try.
3. big hit, jackpot
A single decisive success, especially in gambling or sudden fortune.
一発(いっぱつ)逆転(ぎゃくてん)(ねら)
I'm aiming for a come-from-behind victory.
I want to hit it big and get rich.
Going for a one-hit wonder is risky.

一発(いっぱつ) relates to single actions with impact.

PHYSICAL ACTION (Sense 1):

  • 一発(いっぱつ)(なぐ): to punch once
  • 一発(いっぱつ)(): to fire one shot
  • 一発(いっぱつ)かます: to land a blow (slang)

SINGLE ATTEMPT (Sense 2):

BIG SUCCESS (Sense 3):

Mahjong

  • 一発(いっぱつ): a bonus for winning within one turn after riichi