dishabille (n.)

"undress or negligent dress," especially "a loose morning dress," 1670s, from French déshabillé (17c.), noun use of past participle of déshabiller "to undress" (oneself), from des- (see dis-) + habiller "to dress," originally "prepare, arrange," from Latin habitus "condition, demeanor, appearance, dress," originally past participle of habere "to have, hold, possess; wear; find oneself, be situated; consider, think, reason, have in mind; manage, keep," from PIE root *ghabh- "to give or receive."