Persistent
Persistent adjective - Continuing despite difficulties, opposition, or discouragement.
Tough and persistent are semantically related. In some cases you can use "Tough" instead an adjective "Persistent".
Tough
Tough adjective - Not easily chewed.
Persistent and tough are semantically related. Sometimes you can use "Persistent" instead an adjective "Tough".
Mutual synonyms
Related pairs
Both words in one sentence
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She's tough, persistent, and a physical match for Revy (though not nearly as bright), and is a secondary threat when compared with Russel's lunatic Dragon, Claude Weaver.
Source: The Brute -
He's tall, imposing, tough-as-nails, extremely persistent and so loved by the fans that he became a bonus character in Ultimate Marvel vs.
Source: Creepy Awesome -
In Red Dead Redemption, wolves are tough, highly aggressive, persistent, have a knack for showing up precisely when you don't need them to, love to kill your horses, and attack in waves.
Source: Savage Wolves
Cite this Source
Tough and Persistent. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/persistent/tough
Persistent & Tough. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/persistent/tough>.
Tough or Persistent. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/persistent/tough.
Google Ngram Viewer shows how "persistent" and "tough" have occurred on timeline