Certain
Certain adjective - Known but not named.
Persistent and certain are semantically related. In some cases you can use "Persistent" instead an adjective "Certain".
Persistent
Persistent adjective - Continuing despite difficulties, opposition, or discouragement.
Usage example: although his first attempts were singularly unsuccessful, he was persistent in his pursuit of a career in rock music
Certain and persistent are semantically related. Sometimes you can use "Certain" instead an adjective "Persistent".
Mutual synonyms
Both words in one sentence
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There are persistent rumours that the otherwise useless Goldeen will use Horn Drill under certain conditions.
Source: Urban Legend of Zelda -
Depending on who the player drives as, there will be certain characters that perform better and be more persistent.
Source: Video Game / Mario Kart - They're fairly common in certain parts of the overworld, they're fast enough to keep up with you on horseback, they're persistent, they have a ton of health, and they do a ton of damage.
Cite this Source
Persistent and Certain. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/certain/persistent
Certain & Persistent. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/certain/persistent>.
Persistent or Certain. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/certain/persistent.
Google Ngram Viewer shows how "certain" and "persistent" have occurred on timeline