The Meaning of reisei [冷静] In Japanese

冷静
れいせい
Romaji: reisei N3

What does 冷静 mean?

Translation and Meaning

cool-headedness, calmness, composure

Definition

What does 冷静 mean? It denotes a state of calm, self-control, and clear judgment, especially under pressure. It refers to staying level-headed and making deliberate, rational decisions rather than acting on impulse.

Type

na-adjective (形容動詞)

Stroke Order

Meanings

  • 1) calmness and composure in demeanor
  • 2) ability to think clearly and act rationally under pressure
  • 3) a state or quality of being level-headed, often in challenging situations

Composition

  • 冷: cold, ice; conveys low temperature or cooling effect
  • 静: quiet, calm; silence, stillness
  • Combined meaning: the mental state of staying cool and not being disturbed by emotions; to maintain composure and make deliberate decisions

Usage

  • Formal usage in writing and speeches: 冷静さを保つ, 冷静な判断を下す
  • Casual speech: 冷静だ, 冷静になる
  • Academic or journalistic style: 冷静沈着 describes a person who remains calm and collected under stress
💡 Tips
Mnemonic: think of 冷 as ice and 静 as quiet; when ice stays still, the mind stays calm. Rei-sei sounds like ray-say, a cue to keep a cool head in conversation.

Variations

  • 沈着 (ちんちゃく) — calm, composure
  • 平静 (へいせい) — calmness
  • 冷静沈着 (れいせいちんちゃく) — cool-headedness
  • 動揺 (どうよう) — agitation (antonym)
  • 焦燥 (しょうそう) — impatience/restlessness (antonym)

Example Phrases

  • 彼は 生まれつきの 勇気で どんな 危機も 冷静に 乗り越える。
    Kare wa umaretsuki no yuuki de donna kiki mo reisei ni norikoeru.
    He calmly overcomes any crisis with innate courage.
    Lista:
    • 彼は (Kare wa) – he
    • 生まれつきの (umaretsuki no) – innate
    • 勇気で (yuuki de) – with courage
    • どんな (donna) – what kind of
    • 危機も (kiki mo) – crises
    • 冷静に (reisei ni) – calmly
    • 乗り越える (norikoeru) – overcome
    Core grammar: 「生まれつき」 means ‘innate, from birth’; used before a noun to modify it, as in 「生まれつきの勇気」.
  • 緊急時、彼女は冷静に指示を伝えた。
    Kinkyūji, kanojo wa reisei ni shiji o tsutaeta.
    In an emergency, she calmly gave instructions.
    Lista:
    • 緊急時 (kinkyūji) – emergency
    • 彼女 (kanojo) – she
    • は (wa) – topic marker
    • 冷静に (reisei ni) – calmly
    • 指示を (shiji o) – instructions
    • 伝えた (tsutaeta) – told
    Here, 「冷静」 acts as a na-adjective; the adverbial form is 「冷静に」, used to describe how the action was performed.
冷静