WITLESS Meaning of WITLESS in English [wit.less] adj (bef. 12c) 1: destitute of wit or understanding: foolish 2: mentally deranged: crazy "drive one ~ with anxiety --William Styron" -- wit.less.ly adv -- wit.less.ness n Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012