best-kept secret
Proposed by a contributor, not yet supported by evidence.
Something that is supposed to be secret but is actually widely known.
Điều gì đó được cho là bí mật nhưng thực tế là được biết rộng rãi
Machine-translated — suggest a fix
Examples
AI-drafted example auto-approved by rule (illustrative, not a corpus attestation)
Sources & notes
Listed in Wiktionary’s “English idioms” category (retrieved 2026-07-29); definition pending editorial review. Definition drafted by AI (@cf/meta/llama-3.3-70b-instruct-fp8-fast) and auto-approved by rule on 2026-07-30; pending editor spot-check.
Common questions
What does “best-kept secret” mean?
Something that is supposed to be secret but is actually widely known. Literally: a secret that is kept best
Is “best-kept secret” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.