adjective, mud·di·er, mud·di·est.

verb (used with object), mud·died, mud·dy·ing.

verb (used without object), mud·died, mud·dy·ing.

to become muddy.

Origin of muddy

First recorded in 1375–1425, muddy is from the late Middle English word muddi. See mud, -y1
Related formsmud·di·ly, adverbmud·di·ness, nounun·mud·died, adjectiveun·mud·dy, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for muddy

Contemporary Examples of muddy

Historical Examples of muddy

British Dictionary definitions for muddy


adjective -dier or -diest

covered or filled with mud
not clear or brightmuddy colours
cloudya muddy liquid
(esp of thoughts) confused or vague

verb -dies, -dying or -died

to become or cause to become muddy
Derived Formsmuddily, adverbmuddiness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for muddy

late 13c., from mud + -y (2). Big Muddy in reference to the Missouri or Mississippi rivers is first recorded 1825.


"to make muddy," c.1600, from muddy (adj.). Related: Muddied; muddying.

Online Etymology Dictionary, © 2010 Douglas Harper