The Collaborative International Dictionary
Inexpressibles \In`ex*press"i*bles\, n. pl.
Breeches; trousers;; underwear generally, especially women's;
-- now usually referred to as unmentionables. [Colloq. or
Slang]
--Ld. Lytton.
Wiktionary
n. (context colloquial dated English) breeches; trousers
Usage examples of "inexpressibles".
Elmina recut a cast-off evening coat belonging to her cousin Geoffrey, deepest midnight blue, and had bullied her elderly maid into creating a pair of buff inexpressibles that clung to her long limbs as if molded to them.
Why should she get her inexpressibles in a twist over him smuggling spies?
All agreed that the bridegroom could not have been more handsome, in his bottle green coat and ivory inexpressibles, his brown hair, tied back in a black riband, glinting in the sunlight.