全開(ぜんかい)

ぜんかい
noun
fully open; full throttle; at full power
1. fully open; at maximum; at full power
The state of being opened all the way, with nothing held back—a window thrown wide open, or a valve, tap, or throttle at maximum. Figuratively, doing something at full intensity or energy.
窓(まど)を全開(ぜんかい)にする。
Open the window all the way.
アクセルを全開(ぜんかい)にして走(はし)る。
Drive with the accelerator floored.
今日(きょう)の彼女(かのじょ)は朝(あさ)からテンション全開(ぜんかい)だ。
She's been at full energy since this morning.

Compound of 全(ぜん) (whole) + 開(かい) (open). The opposite is 全閉(ぜんぺい) (fully closed).

Common collocations

  • 全開(ぜんかい)にする: to open fully / set to maximum
  • アクセル全開(ぜんかい): accelerator floored, full throttle
  • テンション全開(ぜんかい): in high spirits, full of energy (figurative)

Usage

Often used figuratively for doing something at full force—エンジン全開(ぜんかい) (engine at full power), 笑顔(えがお)全開(ぜんかい) (a beaming smile).

Related Words

Antonym: 全閉(ぜんぺい)
general
Added 2026.6.30 18:20 · Revised 2026.9.2 13:02
29500/29588_zenkai