...William Arthur Deacon, the more influential critic of the Toronto Globe and Mail, was equally picayune.
-- Mavis Gallant, The Moslem Wife and Other Stories, 1994
So she had never abandoned the Eucharist; without it, she felt the Mass, and all of the Church, would be only ideas she could get at home from books; and because of it, she overlooked what was bureaucratic or picayune about the Church.
-- Andre Dubus, Dancing After Hours, 1996
Picayune is rooted in the Provençal word picaioun which meant "small copper coin." It is likely derivative of an onomatopoetic base pikk- which sounds like the process of beating and coining copper.