An overly formal person, especially one who adheres to current forms; a stickler(noun)
An advocate of formalism(noun)
Of or pertaining to formalism; formalistic(adjective)
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Use "formalist" in a sentence
"It might for someone like me, or like Justice White (both of us are strongly legal realist in our orientation, as you may have guessed) but the point of being a formalist is that if you don't play by the rules, you don't get the result you are seeking."
"News at Eleven: Richard Wilbur is regarded, not always to his liking, as a leading "formalist"--"formal" can be found near "formaldehyde" in the dictionary, he jokes--a master of traditional, tempered verse that can seem old-fashioned in more radical times."
"Frankenthaler's works were true to this so-called formalist aesthetic."