be tight-arsed

be tight-arsed

rude slang To be overly concerned with small, insignificant details. Primarily heard in UK, Australia. I asked Molly to proofread our proposal because she's so tight-arsed that she'll definitely notice the slightest mistake!
Farlex Dictionary of Idioms.
See also:
  • nitpicker
  • nit-picker
  • picker
  • pickers
  • great oaks from little acorns grow
  • Great oaks from little acorns grow, and Mighty oaks from little ...
  • great/tall oaks from little acorns grow
  • mighty oaks from little acorns grow