Fastidious and fussy; difficult to please; exacting, especially about details; meticulous and particular.(adjective)
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Use "finickity" in a sentence
"In all of these things he has undermined the purpose of the reforms through lack of clarity and finickity detailed negotiations that hand obstructionists the whip hand."
"In the process, it missed the enormous amount of finickity detail that needs to be changed if we are to move towards a republic."
"Email and web browsing, check and check … although the browser interface was a little finickity at times."