unsash

Etymology

From un- + sash.

unsash means to untie the sash that holds an article of clothing. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

verb

To untie the sash that holds an article of clothing.“I know how to make her run mad with passion that has nothing to do with books and animals. I know how to make her unpin her hair, unsash her gown, unhook — But he hadn't said a word, only allowed the devil's own smile to lift one corner of his mouth.”
To remove or release a sash from.“My job was to perform the Sashing Ceremony on the banks of the Esk. I should unsash the Honest Lad and Lass of 1953 with thanks for their services and then I should charge and sash the Honest Lad and Lass of 1954.”
To open a sash.“Last humorous final situation I'm likely to register; rest will be hysterically funny; femme hystérique; or hysterical: sits down and eats the chicken like tomorrow is prohibition on food; tip-toe on the bed, unsash shutter, peering out: a Moroccan with Spanish lady, some species of argument under the window: ...”