Certain
Single
Single adjective - Not married.
Certain and single are semantically related in particular topic. Sometimes you can use "Certain" instead an adjective "Single", if it concerns topics such as specific.
Mutual synonyms
Both words in one sentence
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They are obtainable as mounts via completing certain achievements, from a single rare spawn in Northrend that will always give the mount when killed, or as rare drops from certain bosses.
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A particular skill causes his charge to last for a certain amount of time rather then for a single attack, which drastically increases his destructive potential.
Source: Charged Attack -
There are certain keys that sound best for certain instruments, and in a five piece jazz band, it's possible that every single instrument would like to play the song in a different key (except the drummer, obviously).
Source: Damn You, Muscle Memory
Cite this Source
Single and Certain. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/certain/single
Certain & Single. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/certain/single>.
Single or Certain. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/certain/single.
Google Ngram Viewer shows how "certain" and "single" have occurred on timeline