verb (used with object), guised, guis·ing.
verb (used without object), guised, guis·ing.
Origin of guise
Word Origin for guise
late 13c., "style or fashion of attire," from Old French guise "manner, fashion, way," from Frankish *wisa or some similar Germanic source (cf. Old High German wisa "manner, wise;" see wise (n.)). Sense of "assumed appearance" is from 1660s, from earlier meaning "mask, disguise" (c.1500).