1. (

• indefinable ,
• indescribable ,
• ineffable ,
• unspeakable ,
• untellable ,
• unutterable

) defying expression or description; "indefinable yearnings"; "indescribable beauty"; "ineffable ecstasy"; "inexpressible anguish"; "unspeakable happiness"; "unutterable contempt"; "a thing of untellable splendor" ;

2. (

• atrocious ,
• abominable ,
• awful ,
• dreadful ,
• painful ,
• terrible ,
• unspeakable

) exceptionally bad or displeasing; "atrocious taste"; "abominable workmanship"; "an awful voice"; "dreadful manners"; "a painful performance"; "terrible handwriting"; "an unspeakable odor came sweeping into the room" ;

3. (

• ineffable ,
• unnameable ,
• unspeakable ,
• unutterable

) too sacred to be uttered; "the ineffable name of the Deity" ;