HUMDRUM Meaning of HUMDRUM in English adj. & n. --adj. 1. commonplace, dull. 2 monotonous. --n. 1. commonplaceness, dullness. 2 a monotonous routine etc. Etymology: 16th c.: prob. f. HUM(1) by redupl. Oxford English vocab. Оксфордский английский словарь. 2012