sharp as a butter knife
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
Not very intelligent.
Register: humorous
Where it’s used:
Used
American English
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “sharp as a butter knife” mean?
Not very intelligent.
Is “sharp as a butter knife” formal or informal?
sharp as a butter knife is generally humorous.