IPA: //fɪˈnɪk.i.ɪst//
KK: /fɪˈnɪk.i.ɪst/
Very particular or hard to please, often about small details.
She is the finickiest eater I know, only liking certain brands of food.
Comparative: more finicky
Superlative: finickiest
Finickiest → It is formed from 'finicky' (originating from the 19th-century American English, possibly derived from 'finick' meaning to fuss or be particular) and the superlative suffix '-est' (meaning most). The word 'finickiest' describes someone who is the most fussy or particular about details.
Think of someone who is the 'most fussy' or 'particular' about things — that's what finickiest means.
No commonly confused words.