as the day is long
Proposed by a contributor, not yet supported by evidence.
Where it’s used:
Used
Widespread English
Sources & notes
Listed in Wiktionary’s “English idioms” category (retrieved 2026-07-29); definition pending editorial review. Figurative class: Simile (PIE-English corpus, CC BY 4.0, retrieved 2026-07-31).
Common questions
What does “as the day is long” mean?
Absolutely.
Is “as the day is long” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.