虫
Meanings
insect; bug; small crawling or flying creature
A broad everyday word for insects and many small creatures people casually call bugs; it can include crickets, moths, and similar creatures without strict biological precision.
I found a bug in the garden that I had never seen before.
In autumn, you can hear the chirping of insects at night.
inner impulse; unconscious feeling; mood-influencing inner presence
Figurative use rooted in the traditional idea of an internal 'insect' affecting feelings, instincts, or moods. It appears mostly in idioms such as 虫が知らせる, 虫の居所が悪い, and 虫を殺す.
See also: 虫を殺す
Maybe it was a premonition, but I suddenly felt like calling my mother.
The department head seems to be in a bad mood today, as if something is bothering him.
fretfulness; nervous irritability
Old-fashioned or folk-expression use, especially in phrases like 癇の虫, referring to a child's fretfulness, nervousness, or irritability rather than a literal insect.
See also: 虫気
The child was very fretful and started crying over the smallest thing.
person devoted to one thing; single-minded enthusiast
Used after a noun in expressions such as 本の虫 or 仕事の虫, meaning someone absorbed in or devoted to that one thing.
See also: 本の虫
My younger sister is a bookworm and reads all day even on her days off.
He works so much that people call him a workaholic.
valve core
Mechanical term for the small core part of a valve, especially in contexts such as bicycle tire valves. This is a specialized sense unrelated to insects.
After I replaced the bicycle valve core, the air leak stopped.
mushi; hanafuda game with a stripped deck
Only with reading むし
Specialized hanafuda term for a type of game played with a reduced or stripped deck; this sense is usually written in kana.
See also: 虫札
Mushi in hanafuda is a special way of playing with some cards removed.
Usage patterns
- 虫に刺されるto be bitten or stung by an insect
I got bitten by a bug in the park.
- 虫が知らせるto have a premonition; a gut feeling warns one
I had a kind of premonition about it.
- 〈事〉の虫a person devoted to or obsessed with ~
He's a total workaholic.
- 虫を捕まえるto catch a bug
The child is catching bugs and playing.
- 〈物〉に虫がわくfor bugs to breed or appear in something
Bugs bred in the old rice.
Expressions· 28
- 虫の息dying breath; at death's door
- 腹の虫roundworm; intestinal worm · inner feelings; mood-influencing emotions · stomach growling; hunger pangs
- 虫がいいselfish; presumptuous; asking too much
- 虫が好かないdislike instinctively; have an antipathy to
- 虫の居所が悪いirritable; in a bad mood; cranky