注射|ちゅうしゃchuusha[0]heiban (flat)

JLPT N4approx.Common
Definitions
  1. noun, suru verb, transitive verbinjection; jab; shot
    流感りゅうかんの予防よぼうワクチンの注射ちゅうしゃをした。↗
    I was vaccinated against the flu.
Conjugation
Dictionary form注射する(ちゅうしゃする)
Polite (masu)注射します(ちゅうしゃします)
Negative (nai)注射しない(ちゅうしゃしない)
polite (masen)注射しません(ちゅうしゃしません)
classical zu / nu注射せず・注射せぬ(ちゅうしゃせず・ちゅうしゃせぬ)
Past (ta)注射した(ちゅうしゃした)
polite (mashita)注射しました(ちゅうしゃしました)
Past negative (nakatta)注射しなかった(ちゅうしゃしなかった)
polite (masen deshita)注射しませんでした(ちゅうしゃしませんでした)
Te form注射して(ちゅうしゃして)
Potential注射できる(ちゅうしゃできる)
Passive注射される(ちゅうしゃされる)
Causative注射させる(ちゅうしゃさせる)
Causative passive注射させられる(ちゅうしゃさせられる)
Conditional (ba)注射すれば(ちゅうしゃすれば)
tara注射したら(ちゅうしゃしたら)
Volitional注射しよう(ちゅうしゃしよう)
polite (mashou)注射しましょう(ちゅうしゃしましょう)
Imperative注射しろ(ちゅうしゃしろ)

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

Synonyms & antonyms
  • SynonymインジェクションWrittenWritten/formal loanword for injecting liquid; mostly in specialized fields such as medicine or automotive fuel injection; in everyday speech say 「注射」.
  • Related予防接種よぼうせっしゅNeutralVaccination to build immunity against infectious diseases; the vaccine may be injected or taken orally, whereas 「注射」 is specifically injecting medicine with a needle.

For an injection or shot, 「注射」 is the default. Use 「予防接種」 for vaccination against infectious diseases, and 「インジェクション」 for formal or specialized contexts such as medicine and fuel injection.

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

Japanese definitions
  1. 針はりを刺さして体内たいないに薬剤やくざいを注入ちゅうにゅうすること。
  2. (相撲界すもうかいの隠語いんご)八百長やおちょう。
Kanji in this word
English equivalents

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

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