
Finicky
Personality Trait
Finicky may imply a difficult personality when describing a person or animal.

He's so finicky, it's impossible to find a gift he'll like.
Negative Connotation
Often has a slight negative tone, suggesting over-particularity can be annoying.

Her finicky demands made her difficult to cook for.
Subjective Choice
Finicky choices may seem unreasonable or without clear rationale to others.

She's finicky about colors, rejecting ones without knowing why.
Compare with
ChoosyDemandExactFastidiousFussyPicky
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