WITLESS Meaning of WITLESS in English — witlessly , adv. — witlessness , n./wit"lis/ , adj.lacking wit or intelligence; stupid; foolish. [ bef. 1000; ME; OE witleas. See WIT 1 , -LESS ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012