punctilious
C2CEFR level
82/100Rarity: very rare
FormalRegister
Showing great, sometimes excessive, attention to correct behaviour and fine points of etiquette.
He was punctilious in his manners, standing whenever a guest entered the room.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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