late 14c., from Latin pecuniosus "abounding in money," from pecunia "money" (see pecuniary). Related: Pecuniously; pecuniousness.
Examples from the Web for pecunious
If we was buried to-morrow they'd mark him 'Pecunious' and me 'Impecunious.'The Jimmyjohn Boss and Other Stories|Owen Wister
This hunting after pecunious strangers is so systematically carried on that it might be dignified by the name of a science.