jack all
Proposed by a contributor, not yet supported by evidence.
Meaning · English
Nothing.
Register: slang, vulgar
Where it’s used:
Used
American English
Examples
'I hate it.' Gruff, low, rough. 'I paid off her mortgage but she refuses to take more money from me and cleaning is what she's always done. Dad left her with nothing and even before he left he just did jack all in his shed all day.'
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 “jack all” mean?
Nothing.
Is “jack all” formal or informal?
jack all is generally slang, vulgar.