The convert who is more punctilious in his new faith than the lifelong communicant is a familiar figure in Catholic lore.
-- Patrick Allit, Catholic Converts
Nicholas showed us his butterfly collection. He had done a splendid job of spreading them (better than I ever have, let alone at his age). I tried to impress upon him the need for punctilious labeling, a tedious business that raises a butterfly from a mere curio to a specimen of scientific value.
-- Robert Michael Pyle, Chasing Monarchs
Cooper had always been very punctilious about observing the rules laiddown in the . . . brochure.
-- Josef Skvorecky, Two Murders in My Double Life
Punctilious derives from Late Latin punctillum, "a little point," from Latin punctum, "a point," from pungere, "to prick."