無害|むがいmugai[1]atamadaka (head-high)

Common
Definitions
  1. na-adjective, no-adjectiveharmless
    この島しまではたいていのヘビは無害むがいである。↗
    Most snakes on this island are harmless.
Conjugation
Plain form無害(むがい)
Polite (desu)無害です(むがいです)
Negative (dewa nai)無害ではない(むがいではない)
polite (dewa arimasen)無害ではありません(むがいではありません)
Past (datta)無害だった(むがいだった)
Past negative (dewa nakatta)無害ではなかった(むがいではなかった)
Te form (de)無害で(むがいで)
Adverbial (ni)無害に(むがいに)
Conditional (nara)無害なら(むがいなら)

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

Synonyms & antonyms
  • Synonym安全あんぜんNeutralThe most general word for being safe and free from danger. 「無害」 specifically stresses that no harm is produced.
  • Synonym無難ぶなんNeutralMeans safe and unlikely to go wrong, as in 「無難な選択」. 「無害」 stresses causing no harm, as in 「無害な発言」.
  • Synonym差し障りのないさしさわりのないNeutralDescribes things that offend no one or hurt no feelings; often used of topics or replies. 「無害」 instead stresses causing no actual harm.
  • Antonym有害ゆうがいNeutralMeans harmful, as in 「有害物質」; the direct opposite of 「無害」.
  • Antonym危険きけんNeutralMeans dangerous; it stands opposite to the harmlessness expressed by 「無害」.

Use 「無害」 for things that cause no harm to people or the environment, as in 「人体に無害」. For safety say 「安全」, for a safe, reliable choice 「無難」, and for the opposite 「有害」.

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

Japanese definitions
  1. 害がいの無ないこと。
Kanji in this word
English equivalents

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