反射|はんしゃhansha[0]heiban (flat)

JLPT N1approx.Common
Definitions
  1. noun, suru verb, transitive verb, intransitive verb, physicsreflection; reverberation
    目めが部屋へやの明あかりを反射はんしゃしたときに彼女かのじょの目めは輝かがやいた。↗
    Her eyes shone as they reflected the light of the room.
  2. noun, physiologyreflex; reflexes
Conjugation
Dictionary form反射する(はんしゃする)
Polite (masu)反射します(はんしゃします)
Negative (nai)反射しない(はんしゃしない)
polite (masen)反射しません(はんしゃしません)
classical zu / nu反射せず・反射せぬ(はんしゃせず・はんしゃせぬ)
Past (ta)反射した(はんしゃした)
polite (mashita)反射しました(はんしゃしました)
Past negative (nakatta)反射しなかった(はんしゃしなかった)
polite (masen deshita)反射しませんでした(はんしゃしませんでした)
Te form反射して(はんしゃして)
Potential反射できる(はんしゃできる)
Passive反射される(はんしゃされる)
Causative反射させる(はんしゃさせる)
Causative passive反射させられる(はんしゃさせられる)
Conditional (ba)反射すれば(はんしゃすれば)
tara反射したら(はんしゃしたら)
Volitional反射しよう(はんしゃしよう)
polite (mashou)反射しましょう(はんしゃしましょう)
Imperative反射しろ(はんしゃしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym照り返してりかえしNeutralNoun for sunlight and heat bounced back off the ground or pavement, as in 「アスファルトの照り返し」; colloquial. 「反射」 is broader and also covers physiological reflexes.
  • Synonym反映はんえいNeutralNoun for something being reflected or made manifest, as in 「民意の反映」 or 「設定を反映する」; stresses the outward showing.
  • Synonym反照はんしょうWrittenWritten/formal prose word for light being reflected or the evening glow; rare in everyday use.
  • Synonym返照へんしょうWrittenWritten/formal prose word for reflected light or the setting sun, found mostly in poetry and literary prose.
  • SynonymリフレクションNeutralLoanword for reflection, physical or as self-reflection; common in design and education, as in 「リフレクションを行う」.
  • Synonym照り返すてりかえすNeutralVerb for light or heat being reflected, usable both intransitively and transitively, as in 「日差しを照り返す」; 「反射」 also covers reflexes.
  • Related反射運動はんしゃうんどうNeutralNoun for a reflex action, used mainly in physiology; not used for light or sound.
  • Related反射作用はんしゃさようNeutralNoun for the reflex mechanism, used mainly in physiology; close to 「反射運動」.
  • Related映射えいしゃWrittenWritten/formal prose word for light or images shining and reflecting on a surface; rare.
  • Antonym吸収きゅうしゅうNeutralAbsorption; the opposite of 「反射」.
  • Antonym透過とうかNeutralTransmission through a material; the opposite of 「反射」.

Use 「反射」 for light or sound bouncing off a surface and for physiological reflexes, as in 「光の反射」 and 「条件反射」. Sunlight and heat radiating back off the ground is 「照り返し」; public opinion or settings being reflected is 「反映」. 「反射運動」 and 「反射作用」 are physiology terms, 「リフレクション」 a loanword used in design and education, and 「吸収」 and 「透過」 are the opposites.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese definitions
  1. 光ひかりや音おとなどが、物ものに当あたってはねかえること、又または、はねかえすこと。
  2. 意志いしとは関係かんけいなく起おこる、刺激しげきに対たいする生理的せいりてきな反応はんのう。無条件むじょうけん反射はんしゃ。
  3. ある物ものの影響えいきょうが他ほかの物ものに現あらわれること。
Kanji in this word
English equivalents
See also

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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