ineffable |inˈefəbəl|
adjective
- too great or extreme to be expressed or described in words : the ineffable natural beauty of the Everglades.
- not to be uttered : the ineffable Hebrew name that gentiles write as Jehovah.
DERIVATIVES
ineffability |-efəˈbilitē| noun
ineffably |-blē| adverbORIGIN
late Middle English : from Old French, or from Latin ineffabilis, from in- ‘not’ + effabilis (see effable ).