If you're extremely particular or fussy, you're picky. A picky eater might only eat chicken nuggets and tater tots.

When you invite your picky friend to dinner, you'll probably have a hard time deciding what to serve, since she hates all vegetables; and if you're picky about sleeping in a comfortable, clean place, you might not be a fan of camping. Picky people are hard to please — they like things to be a certain way. This informal word first appeared in the 1860s.

Definitions of picky
  1. adjective
    exacting especially about details
    synonyms: finical, finicky, fussy, particular
    giving careful attention to detail; hard to please; excessively concerned with cleanliness
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