Synonyms: humdrum, monotonous
Definition: tediously repetitious or lacking in variety
Usage: a humdrum existence; all work and no play; nothing is so monotonous as the sea
Similar words: dull
Definition: lacking in liveliness or animation
Usage: he was so dull at parties; a dull political campaign; a large dull impassive man; dull days with nothing to do; how dull and dreary the world is; fell back into one of her dull moods
Synonyms: monotone, monotonic, monotonous, flat
Definition: sounded or spoken in a tone unvarying in pitch
Usage: the owl's faint monotonous hooting
Similar words: unmodulated
Definition: characterized by lack of variation in pitch, tone, or volume
Usage: he lectured in an unmodulated voice edged with hysteria