ineffable /inˈefəb(ə)l/ I. adjective 1. too great or extreme to be expressed or described in words • the ineffable natural beauty of the Everglades. 2. not to be uttered • the ineffable Hebrew name that gentiles write as Jehovah. II. derivatives 1. ineffability /inˌefəˈbilədē / noun 2. ineffably /inˈefəblē / adverb – origin late Middle English: from Old French, or from Latin ineffabilis, from in- ‘not’ + effabilis
