Flat
Flat adjective - Being neither more nor less than a certain amount, number, or extent.
Vacant and flat are semantically related in bland topic. In some cases you can use "Vacant" instead an adjective "Flat", when it comes to topics like inexpressive.
Vacant
Vacant adjective - Lacking contents that could or should be present.
Flat and vacant are semantically related in inexpressive topic. Sometimes you can use "Flat" instead an adjective "Vacant".
Both words in one sentence
- Agent Shih-na in Ace Attorney Investigations: Miles Edgeworth is always wearing a stern, vacant expression and speaks in very short, to-the-point phrases (presumably in a very flat voice, if the game had real voices).
Source: Emotionless Girl - Synopsis: John returns from Afghanistan later than he did in canon, and rents a long-vacant flat on Baker Street.
Source: Fanfic Recs / Sherlock
Cite this Source
Vacant and Flat. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/flat/vacant
Flat & Vacant. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/flat/vacant>.
Vacant or Flat. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/flat/vacant.
Google Ngram Viewer shows how "flat" and "vacant" have occurred on timeline