na'n

(na'm), if (with false supposition), Middle Gaelic dane, da n-, da m- (Dean of Lismore), Irish da, dá (for da n-, eclipsing), Early Irish dá n-, día n-, Old Irish dian: the prep. di or de and rel. an; Manx dy. The Gaelic form with n for d is puzzling, though its descent from da n- seems undoubted.