Flat
Tranquil
Tranquil adjective - Free from disturbing noise or uproar.
Flat and tranquil are semantically related. Sometimes you can use "Flat" instead an adjective "Tranquil".
Nearby Word: tranquilly
Both words in one sentence
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Tranquil Fury: Matthew frequently explains how angry he is in a totally flat voice.
Source: Literature / Matthew Swift
Cite this Source
Tranquil and Flat. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/flat/tranquil
Flat & Tranquil. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/flat/tranquil>.
Tranquil or Flat. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/flat/tranquil.
Google Ngram Viewer shows how "flat" and "tranquil" have occurred on timeline