Main Entry: ¹clut·ter

Pronunciation: \ˈklə-tər\

Function: verb

Etymology: Middle English clotteren to clot, from clot

Date: 1556

intransitive verb chiefly dialect : to run in disordertransitive verb : to fill or cover with scattered or disordered things that impede movement or reduce effectiveness <a room cluttered with toys> —often used with up