Sullen
Sullen adjective - Causing or marked by an atmosphere lacking in cheer.
Uncooperative and sullen are semantically related. In some cases you can use "Uncooperative" instead an adjective "Sullen".
Nearby Word: sullenly
Uncooperative
Uncooperative adjective - Unwilling to cooperate.
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Synonyms for Uncooperative
Sullen and uncooperative are semantically related. Sometimes you can use "Sullen" instead an adjective "Uncooperative".
Mutual synonyms
Both words in one sentence
- The Starscream: Steve is a rather spiteful example, when Anthony receives promotion ahead of him, he stops trying to work and becomes sullen and uncooperative.
Source: Series / Reggie Perrin
Cite this Source
Uncooperative and Sullen. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/sullen/uncooperative
Sullen & Uncooperative. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/sullen/uncooperative>.
Uncooperative or Sullen. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/sullen/uncooperative.
Google Ngram Viewer shows how "sullen" and "uncooperative" have occurred on timeline