adjective
- not expressible; incapable of being uttered or described in words: a scene of inexpressible beauty.
noun
- inexpressibles, Archaic. trousers; pants.
adjective
- too great, etc, to be expressed or uttered; indescribable
1620s, from in- (1) “not” + expressible (see express (v.)). Related: Inexpressibly.