Other forms: cleaning, cleaned, cleaner, cleans, cleanest
Clean is what a plate is when the washing-up has worked: nothing left on the surface, no grease, no marks. A clean shirt out of the drawer, clean hands before dinner, a window you can see through again.
Clean is not the same as tidy, and the two are worth keeping apart — a room with clothes all over the floor can be perfectly clean, and a tidy room can be filthy. As a verb you clean the kitchen, clean your teeth, clean a cut before the plaster goes on. The word also means free of anything wrong: a clean driving licence, a clean record, a clean drugs test. And free of roughness: a clean cut, a clean catch, a clean break in a bone. Thrown in front of a verb it means completely — I clean forgot — and to come clean is to admit at last what you have been sitting on.
1adjectiveadjWith no dirt or marks on it.~68%
“Put a clean shirt on before they arrive.”
2verbcleanTo take the dirt off something.~7%
“I clean the windows twice a year.”
3adjectivenothingWith nothing dishonest or illegal on the record.~21%
“He has a clean licence and ten years of driving.”
4adjectiveneatNeat and exact, with no rough edges.~4%
“The saw left a clean edge along the whole board.”
Shares are an estimate: a language model read 140 sentences found in the wild and placed 112 of them on a sense (28 were unclear) — a count of our sample, not a measurement of English.
Old English clāne meant clean, pure, clear — but the Germanic word behind it, *klainī, meant fine, dainty and small. The continent kept the size and English kept the scrubbing: German and Dutch klein both still mean small and Swedish klen means weak, while only English took the word all the way to spotless. Further back it may run to a root meaning gleaming, which is where a clean thing ends up anyway.
Middle English
clene
English, today
clean
Built from
From Middle English clene. From Middle English clene, from Old English clāne, clǣne (“clean; pure; clear”), from Proto-West Germanic klainī (“dainty, fine, small; clean”), perhaps from Proto-Indo-European glēy- (“gleaming”), from Proto-Indo-European gel- (“to gleam”). 2
Etymology from Wiktionary, CC BY-SA