I. (ˈ)in, ən+ adjective
Etymology: Middle English, from Middle French, from Latin ineffabilis, from in- in- (I) + effabilis effable — more at effable
1. : incapable of being expressed in words : unutterable , indescribable
ineffable joy
ineffable torture
: unspeakable
ineffable disgust
ineffable bungler
2. : not to be uttered : taboo
the ineffable name of Jehovah
• in·ef·fa·ble·ness -nə̇s noun -es
• in·ef·fa·bly -blē, -bli adverb
II. noun
( -s )
: something that is ineffable