Clean
Clean adjective - Having no exceptions or restrictions.
Usage example: the clean joy of running that young children experience
Uncertain
Uncertain adjective - Likely to change frequently, suddenly, or unexpectedly.
Nearby Words: uncertainty, uncertainly
Both words in one sentence
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Warhammer 40,000: In the Ravenor series of books, a hive world (urban planet) is infested with robotic ravens of uncertain origin, known as The Unkindness, whose role appears to be simply to clean up rubbish from the ecosystem.
Source: Mechanical Lifeforms
Cite this Source
Uncertain and Clean. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/clean/uncertain
Clean & Uncertain. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/clean/uncertain>.
Uncertain or Clean. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/clean/uncertain.
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