spare no effort
Proposed by a contributor, not yet supported by evidence.
To work very hard and use all available resources to achieve something.
cố gắng hết sức và sử dụng tất cả nguồn lực để đạt được điều gì đó
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 2026-07-31; pending editor spot-check.
Common questions
What does “spare no effort” mean?
To work very hard and use all available resources to achieve something. Literally: hold back no energy or resource
Is “spare no effort” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.