Clean
Both words in one sentence
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SCTV did "Nice Kids From Hell", a parody of 1950s juvenile delinquent movies, where a group of clean-cut, polite teens terrorize a middle-aged couple with their pleasant, helpful behavior.
Source: Teens Are Monsters -
Although it isn't very helpful after Alex uses it to clean up the shop, then doesn't give it a break or reward it in any way.
Source: Helping Hands -
In a series of Verizon FioS commercials, the clean cut, friendly and helpful Verizon FioS salesman is made to shine brighter by the dim-witted, slovenly and dishonest cable guy.
Source: Straw Loser
Cite this Source
Helpful and Clean. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/clean/helpful
Clean & Helpful. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/clean/helpful>.
Helpful or Clean. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/clean/helpful.
Google Ngram Viewer shows how "clean" and "helpful" have occurred on timeline