Flat
Flat adjective - Being neither more nor less than a certain amount, number, or extent.
Tired is a synonym for flat in without energy topic. In some cases you can use "Tired" instead an adjective "Flat".
Mutual synonyms
Both words in one sentence
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Eventually, however, Stanley gets tired of being flat, and his brother - who was formerly jealous of him - is able to return him to his normal shape with a bicycle pump.
Source: Cursed with Awesome - In My Cousin Vinny, Vinny knocks a guy flat on his back after getting tired of posturing when he sees him again.
Source: "Hey, You!" Haymaker -
Cox flat out stated that they did love each other and was tired of pretending they didn't.
Source: The "I Love You" Stigma
Cite this Source
Tired and Flat. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/flat/tired
Flat & Tired. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/flat/tired>.
Tired or Flat. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/flat/tired.
Google Ngram Viewer shows how "flat" and "tired" have occurred on timeline