毒性|どくせいdokusei[0]heiban (flat)

1. nountoxicity; virulence
   それは毒性どくせいのある化学かがく物質ぶっしつが含ふくまれていた。↗

   It contained harmful chemicals.
2. no-adjectivetoxic; virulent; poisonous

• Synonym有毒ゆうどくNeutralDescribes something that contains poison, as in 「有毒ガス」; 「毒性」 centers on the nature and strength of toxicity, as in 「毒性が強い」.
• Antonym無毒むどくNeutralMeans nontoxic and harmless; it stands opposite 「毒性」 on the poisonous–nonpoisonous axis.
• Antonym安全性あんぜんせいWrittenWritten/formal: the overall degree of safety. Low toxicity often means high 「安全性」, but the two are not strict antonyms—choose with care.

Use 「毒性」 for the nature and strength of a poison, as in 「毒性試験」 and 「急性毒性」; use 「有毒」 for things that contain poison. Their opposites are 「無毒」 and 「安全性」.

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

1. 有毒ゆうどくな性質せいしつ。