twelvish /ˈtwɛlvɪʃ/adjective 1noun 1 adjective1 •(informal) Of about twelve years of age.The young men were in their shirtsleeves, with their collars open, and Miss Tillie was wilting in her chair, fanned by a twelvish black girl who looked unutterably bored. — 2005 noun1 •(informal) Any time close to 12 o'clock.
