Comparative form of cleanly: more cleanly(adjective)
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Use "cleanlier" in a sentence
"I'm sleeping better, eating better, being much cleanlier both toward myself (with my own bathroom a few feet away, laziness doesn't really apply), and the room."
"Gargantua answered, that he had taken such a course for that himself, that in all the country there was not to be found a cleanlier boy than he."
"(We Persians have cleanlier ways of consulting heaven.)"