as quiet as a mouse
idiom · Idiom / expression B1
Plain meaning
extremely quiet
Exam-register meaning
used informally to describe someone or somewhere making almost no noise
In context
naturalThe baby was as quiet as a mouse during the whole journey.
examThe phrase is informal and would be unsuitable in most academic essays, where “silent” or “very quiet” is preferred.
Common collocations
as quiet as a mousekeep quietremain silent
Watch out
Avoid using this idiom in formal IELTS/PTE essays; use “silent” or “almost silent.”
Word family
quiet (adjective)quietly (adverb)