Flat
Flat noun - A room or set of rooms in a private house or a block used as a separate dwelling place.
Key
Key noun - An explanatory list of the symbols on a map or chart.
How words are described
Both words in one sentence
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Susan will reply that the key will be impossible to find lying around...then calls herself an idiot as she realises that she already has the key to the flat.
Source: Video Game / The Cat Lady - In Paint Your Wagon, "There's A Coach Comin' In" modulates from D to E-flat to F, and the ensemble reprise of "Wand'rin' Star" takes the key up from E-flat to F for its last half-chorus.
Source: Truck Driver's Gear Change - Although Coop's singing isn't all that terrible, more flat than horribly off key.
Source: Hollywood Tone-Deaf
Cite this Source
Key and Flat. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/flat/key
Flat & Key. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/flat/key>.
Key or Flat. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/flat/key.
Google Ngram Viewer shows how "flat" and "key" have occurred on timeline