Keen as mustard
Solemn and keen as mustard are semantically related. In some cases you can use "Solemn" instead an adjective phrase "Keen as mustard".
Solemn
Solemn adjective - Having or showing a formal and serious or reserved manner.
Keen as mustard and solemn are semantically related. You can use "Keen as mustard" instead an adjective "Solemn".
Cite this Source
Solemn and Keen as mustard. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/keen_as_mustard/solemn
Keen as mustard & Solemn. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/keen_as_mustard/solemn>.
Solemn or Keen as mustard. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/keen_as_mustard/solemn.