Clean
Mutual synonyms
Both words in one sentence
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Aiden is a harmless inventor with a squeaky-clean criminal record who is mistaken for his brother far too often for his liking.
Source: Evil Twin -
This is further inverted by Harmless Villain Robbie Rotten, who is clean shaven to the point you wonder if the actor isn't wearing a rubber mask (actually, he kind of is).
Source: Good Hair, Evil Hair -
Harmful to Minors: Eleven year old Brian Rusk plays two seemingly harmless pranks on Wilma Jerzyk one, throwing mud on her clean sheets; two, throwing rocks at her house with messages rubber banded to them.
Source: Literature / Needful Things
Cite this Source
Harmless and Clean. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/clean/harmless
Clean & Harmless. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/clean/harmless>.
Harmless or Clean. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/clean/harmless.
Google Ngram Viewer shows how "clean" and "harmless" have occurred on timeline