反射神経(はんしゃしんけい)

はんしゃしんけい
noun
reflexes; reaction speed
body-internalsports
1. reflexes; reaction speed
The ability to respond quickly and involuntarily to stimuli. Used both in medical and everyday contexts.
反射神経(はんしゃしんけい)がいい。
To have good reflexes.
年(とし)を取(と)ると反射神経(はんしゃしんけい)が鈍(にぶ)くなる。
As you age, your reflexes become slower.
あのゴールキーパーは反射神経(はんしゃしんけい)が抜群(ばつぐん)で、どんなシュートにも素早(すばや)く反応(はんのう)する。
That goalkeeper has outstanding reflexes and reacts quickly to any shot.

A compound of 反射(はんしゃ) (reflex, reflection) and 神経(しんけい) (nerves). In everyday Japanese, this term is used loosely to mean reaction speed or quick reflexes, especially in sports and driving. In medical contexts, it refers specifically to the reflex arc of the nervous system.

The expression 反射神経(はんしゃしんけい)がいい/わるい (good/bad reflexes) is extremely common in daily conversation.

Common collocations

Similar words

  • 反応速度(はんのうそくど): reaction speed — more technical, measures actual response time
  • 運動神経(うんどうしんけい): motor skills, athletic ability — broader term for physical coordination
  • 動体視力(どうたいしりょく): dynamic visual acuity — the ability to track moving objects

Related Words

Compare: 運動神経(うんどうしんけい) (motor skills, athletic ability)
general
Added 2026.4.26 21:33 · Revised 2026.9.2 13:02
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