害虫

• Reading: がいちゅう
• Romaji: gaichuu
• Kanji breakdown: 害 (gai) — harm, damage; 虫 (chuu/mushi) — insect, bug
• Pronunciation: /ɡa.i.tɕɯː/

Meaning

Pest; harmful insect; vermin that damages crops, gardens, or structures.

A noun referring to insects that cause damage to agriculture, forestry, stored goods, or human health. Contrasted with 益虫 (beneficial insects). Common in farming, gardening, and pest control contexts. Japan has specific 害虫 associated with rice paddies and fruit orchards.

Examples

1. 害虫を防ぐために農薬を使うかどうかは難しい問題だ。 Whether to use pesticides to prevent pests is a difficult issue.
2. 庭の野菜が害虫にやられてしまった。 The vegetables in the garden were damaged by pests.
3. 害虫駆除の業者に依頼して家全体を消毒した。 I hired a pest control company to disinfect the entire house.

Usage Guide

Context: agriculture, gardening, pest control

Tone: neutral

Origin & History

Compound of 害 (harm, damage) + 虫 (insect, bug). A straightforward Sino-Japanese compound where both kanji contribute their core meaning.

Cultural Context

Era: Ancient

Generation: All ages

Social background: Universal