fussbudget

fussbudget

informal One who tends to be fussy or particular, usually to an excessive or unnecessary degree. Primarily heard in US. Don't be such a fussbudget, huh? This really isn't a big deal. Of course Vanessa found some miniscule issue that no one else would have noticed. She's such a fussbudget.
Farlex Dictionary of Idioms.
See also:
  • fusspot
  • joking apart/aside
  • (all) joking apart
  • card
  • carded
  • carding
  • high-maintenance
  • long green
  • picky
  • I believe you, (but) thousands wouldn't