not say boo to a fly
not say boo to a fly
To be particularly shy, diffident, or timid by nature. Primarily heard in Australia. My brother is a very sweet, warm-hearted man who wouldn't say boo to a fly. How can you suspect him of committing this crime? The neighbour's daughter is just the cutest little thing, but she couldn't say boo to a fly.
See also: boo, fly, not, say
Farlex Dictionary of Idioms.
- not say boo (to anyone)
- not say boo to a goose
- he, she, etc. wouldn't say boo to a goose
- wouldn't say boo to a goose
- he, she, etc. wouldn't harm/hurt a fly
- wouldn't harm a fly
- can't say boo to a goose
- not hurt a flea
- not hurt a fly
- wouldn't hurt a fly