What does cleanly mean?
"Cleanly" functions as both an adjective and an adverb, with distinct pronunciations for each role. As an adjective (pronounced KLEN-lee), it describes a person or, especially, an animal that is habitually clean and well groomed — cats are often called cleanly animals. As an adverb (pronounced KLEEN-lee), it means doing something neatly, smoothly, and precisely, without mess, jaggedness, or unintended damage: a knife cuts cleanly, a bone breaks cleanly, a ball is struck cleanly. The word carries connotations of precision and tidiness rather than mere absence of dirt. It derives from the Old English root behind "clean" and belongs to the same family as "cleanse" and "cleanliness." While the adjective form has become somewhat formal or dated in everyday conversation, the adverb remains firmly established in ordinary usage wherever smoothness or accuracy of action is being described.
Habitually clean; liking to keep oneself or one's surroundings clean and tidy.
"Ferrets can make affectionate pets, though they are not especially cleanly animals."
Somewhat formal or literary today; most natural when describing animals.
In a clean, smooth, or precise way, without mess, raggedness, or accidental damage.
"The stone skipped cleanly across the surface of the lake."
"Cleanly" has two different pronunciations depending on its part of speech: as an adjective it rhymes with "manly," but as an adverb it takes a long "ee" sound.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cleanly
"Cleanly" derives from Old English "clǣne" (clean, pure), formed with the adjectival/adverbial suffix "-ly." It has been used in English since the Middle English period to mean both habitually clean and done in a neat manner. It shares its Germanic root with "clean," "cleanse," and "cleanliness," all ultimately from the same Proto-Germanic base meaning pure or clear.
How cleanly is actually used
The adjective sense (habitually clean) is now somewhat formal or old-fashioned in everyday speech, though it survives naturally in descriptions of animals. The adverb sense is common and neutral in register, frequently used of cutting, breaking, hitting, or separating things precisely.
Easily confused with cleanly
"Clean" is the general term for free of dirt, while the adjective "cleanly" specifically describes habitual personal cleanliness, and the adverb "cleanly" describes doing something neatly or precisely.