rear-comb. form
Stress is usually determined by a subsequent element and vowels may be reduced accordingly; see e.g.
rear admiral n.Origin: A borrowing from French. Etymons: French rere; French arrière.
Etymology: Partly < Anglo-Norman rere, reire, Middle French riere (adverb) back (c1000 in Old French as redre ; < classical Latin retrō retro adv.), and partly < Middle French, French arrière arrière n.Found in borrowings from French and in English formations modelled on these. In later use overlapping semantically with, and often difficult to distinguish from, compounds of rear adj.2 or rear n.2 In recent use the older spelling rere- has sometimes been adopted, especially in archaic or architectural terms (see rear arch n., rear vault n.).
This entry has been updated (OED Third Edition, June 2009; most recently modified version published online December 2020).