Flat
Quiet
Quiet adjective - Free from disturbing noise or uproar.
How words are described
Both words in one sentence
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Villainous Breakdown: The normally flat, emotionless Captain Neville eventually resorts to slapping Danny upside the head to keep him quiet.
Source: Series / Revolution - In real life, he's a quiet, awkward man who asks that his fans not interact with him if they see him, and flat out said that he's Not Good with People due to his social anxiety.
Source: Funny Character, Boring Actor -
Presumably this reflects a quiet, flat tone of voice.
Source: No Punctuation Period
Cite this Source
Quiet and Flat. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/flat/quiet
Flat & Quiet. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/flat/quiet>.
Quiet or Flat. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/flat/quiet.
Google Ngram Viewer shows how "flat" and "quiet" have occurred on timeline