one-and-done
Proposed by a contributor, not yet supported by evidence.
Meaning · English
Completed or effective with just one attempt or action
Nghĩa · Tiếng Việt
Hoàn thành hoặc hiệu quả chỉ với một lần cố gắng hoặc hành động
Machine-translated — suggest a fix
Literally: one thing done
Where it’s used:
Used
Widespread English
Examples
The new policy is one-and-done, simplifying the process
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 2026-07-31; pending editor spot-check.
Common questions
What does “one-and-done” mean?
Completed or effective with just one attempt or action Literally: one thing done
Is “one-and-done” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.