not half
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
Greatly; to a considerable extent.
Register: slang
Examples
"So you fancy that girl then?" "Not half!"
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “not half” mean?
Greatly; to a considerable extent.
Is “not half” formal or informal?
not half is generally slang.