diddly-squat
/ˈdɪdlɪˌskwɒt
/(also doodly-squat)
pronoun [usually with negative] informal
Anything: Hiram didn’t care diddly-squat about what Darrel thought...
- Voting for these Bozos ain't gonna change diddly-squat - it's all more of the same.
- In respect of getting rid of the private prison in Auckland there has been absolutely none - diddly-squat.
- These six people want to be the next Jamie Oliver or Nigella Lawson, even if some of them don't know doodly about cooking (there was a woman on the other night who claimed to know loads about cooking, but thought spinach was basil).
Origin
1960s: probably from US slang doodle 'excrement' + squat in the sense 'defecate'.