Keen
Keen adjective - Able to sense slight impressions or differences.
Pertinacious and keen are semantically related. In some cases you can use "Pertinacious" instead an adjective "Keen".
Pertinacious
Pertinacious adjective - Continuing despite difficulties, opposition, or discouragement.
Keen and pertinacious are semantically related. Sometimes you can use "Keen" instead an adjective "Pertinacious".
Nearby Word: pertinacity
Mutual synonyms
Cite this Source
Pertinacious and Keen. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/keen/pertinacious
Keen & Pertinacious. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/keen/pertinacious>.
Pertinacious or Keen. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/keen/pertinacious.
Google Ngram Viewer shows how "keen" and "pertinacious" have occurred on timeline