What does cleanse mean?
"Cleanse" means to make something thoroughly clean, most often by washing away dirt, toxins, or impurities. It applies both literally and figuratively: you can cleanse your skin with a facial wash, cleanse a wound with antiseptic, or, in a spiritual register, cleanse yourself of guilt through confession or ritual. The word carries connotations of renewal and purification that go beyond simple tidying, which is why it dominates skincare and wellness marketing — phrases like "cleanse the palate" between courses at a tasting, or the popular "juice cleanse," trade on this sense of resetting and refreshing. Derived from Old English "clænsian," it shares its ancestry with the everyday word "clean," but in modern usage it occupies a more elevated, intentional niche. A useful word whenever cleaning implies restoration rather than mere housekeeping.
To make something or someone thoroughly clean, especially by washing; figuratively, to rid oneself of guilt, sin, or impurity.
"Rinse the vegetables well and cleanse them of any lingering grit."
Often appears in wellness, medical, and ceremonial contexts where a deeper purification than ordinary cleaning is implied.
A treatment or regimen intended to purge the body of impurities, especially a short-term diet such as a detox or juice cleanse.
"She started a three-day juice cleanse at the beginning of January."
This noun use is largely a modern development popularized by the health and wellness industry.
The juice-cleanse industry turned an ordinary Old English verb into a multi-billion-dollar buzzword.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cleanse
"Cleanse" derives from the Old English verb "clænsian," formed on the adjective "clæne" (clean), making it a native Germanic word rather than a Latin borrowing. It has meant "to make clean" since the earliest periods of English, with the figurative religious sense of purifying from sin appearing early as well. Its close relatives "clean," "cleanly," and "cleanliness" all descend from the same Old English root, and the agent noun "cleanser" developed later for products and substances that perform the cleaning.
Related word forms
How cleanse is actually used
Register sits slightly above everyday speech: "cleanse" sounds more deliberate and thorough than "clean," which makes it favored in skincare marketing, wellness culture, and religious or ceremonial language. In casual conversation people more often say "wash" or "clean."
Easily confused with cleanse
"Clean" is a broader adjective and general-purpose verb meaning free of dirt or to remove dirt, while "cleanse" specifically implies a deep or purifying washing, often of the body or spirit.