"act of placing after," 1630s, noun of action from Latin postponere "put after; esteem less; postpone" from post "after" (see post-) + ponere "to put, place" (see position (n.)). Perhaps modeled on French postposition. Related: Postposit (v., 1660s); postpositive; postpositional.
post-nuptial
post-operative
post-partum
postpone
postponement
postposition
postprandial
post-road
postscribe
postscript
postulant