Respect for the cloth cannot be won among these open-hearted folk by finnicky manners.
That comes under the head of earnings, if you are finnicky about the profits.
But he was a past-master in the art, notwithstanding he had not officiated before in the presence of so "finnicky" an assemblage.
1825, "dainty, mincing," from finical "too particular" (1590s), perhaps from fine (adj.) + -ical as in cynical, ironical. The -k- between the final -c- and a suffix beginning in -i, -y, or -e is an orthographic rule to mark the pronunciation of -c- as "k" (cf. picnicking, trafficking, panicky, shellacked).