Keen
Keen adjective - Able to sense slight impressions or differences.
Unwearying and keen are semantically related. In some cases you can use "Unwearying" instead an adjective "Keen".
Unwearying
Unwearying adjective - Showing sustained enthusiastic action with unflagging vitality.
Keen and unwearying are semantically related. Sometimes you can use "Keen" instead an adjective "Unwearying".
Nearby Word: unwearied
Mutual synonyms
Cite this Source
Unwearying and Keen. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/keen/unwearying
Keen & Unwearying. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/keen/unwearying>.
Unwearying or Keen. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/keen/unwearying.
Google Ngram Viewer shows how "keen" and "unwearying" have occurred on timeline