adv. Obs. Also 5 traytous-, 6 trayteous-. [after OF. trai-, trayteusement, traitouse-, tra(h)iteusement, f. traitos, trayteus (app. f. stem trait- of trait-eur + -eus, -OUS).] Traitorously.
c. 1450. Brut, cxxiii. 126 (Douce MS.). But þe Erl Godwyne … falsly & traytously þouȝt to slee þo ij breþerne.
1489. Caxton, Faytes of A., IV. viii. 249. The prysoner had other traitously or by som otherwise assaylled whan they were but them two togyder.
1559. Mirr. Mag., Rich. II., vii. Mine vncle Edmunde … right trayteously arose.
