Added 9 October 2026 monotonous /məˈnɒtənəs/ adjective Categories: Describing WordsRare Words adjective ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about monotonous at Wordnik → Where our words come from → Having an unvarying pitch or tone. Tedious, repetitious, or lacking in variety. Related Words: monotonehumdrumdullmonotonicunmusicalunmelodicunmelodioustediouspompdrabboringrepetitive Back to today's word