- 1to fill a place with too many things, so that it is messy Don't clutter the page with too many diagrams. I don't want all these files cluttering up my desk.
- 2(figurative) Try not to clutter your head with trivia.
NAmE//ˈklʌt̮ər//clutter something (up) (with something/somebody)Verb Forms present simple I / you / we / they clutter
he / she / it clutters
past simple cluttered
-ing form cluttering