Flat
Flat adjective - Sounded or spoken in a tone unvarying in pitch.
Monotone
Monotone adjective - Sounded or spoken in a tone unvarying in pitch.
Mutual synonyms
Both words in one sentence
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Neither sound anything more than a shallow mocking of the actual one; typically far too flat/monotone, and the vowels are all off — nowhere near mangled enough!
Source: Useful Notes / British Accents - While he was criticized by many for being flat and monotone in the first two games, he was highly praised for his performance of Shepard in Mass Effect 3.
Source: Sugar Wiki / He Really Can Act -
Bad "Bad Acting": Averted in "Hogs and Kisses"; Cory isn't exactly flat or monotone in his performance for the Pennbrook video tour, but he does constantly flub his lines and appears very ill-at-ease.
Source: Series / Boy Meets World
Cite this Source
Monotone and Flat. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/flat/monotone
Flat & Monotone. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/flat/monotone>.
Monotone or Flat. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/flat/monotone.
Google Ngram Viewer shows how "flat" and "monotone" have occurred on timeline