- gaichuu harmful insect, noxious insect, pest, vermin
Used in everyday conversation and formal writing to refer to insects that damage crops, property, or health, such as cockroaches or mosquitoes.
害虫を駆除するために、業者を呼んだ。
Gaichuu o kujo suru tame ni, gyousha o yonda.
I called a professional to get rid of the pests.
この農薬は、特定の害虫にしか効かない。
Kono nouyaku wa, tokutei no gaichuu ni shika kikanai.
This pesticide only works on specific harmful insects.
⚖️ Commonly confused with 害虫 (gaichuu) and 虫 (mushi); the latter is a general term for any insect or bug, without the negative connotation of being harmful.
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