To ingrain grime or dirt which is difficult to remove into (something); also (more generally), to make (something) dirty; to soil.
Sometimes followed by up: to become covered or splashed with mud; to become dirty or soiled.
To become contaminated or impure.
To make (something) impure; to contaminate.
To make (a colour) dirty, dull, or muted.
To make (a matter, etc.) more complicated or unclear; to make a mess of (something).
To cover or splash (someone or something) with mud.
To make (water or some other liquid) cloudy or turbid by stirring up mud or other sediment.
To confuse (a person or their thinking); to muddle.
To damage (a person or their reputation); to sully, to tarnish.
Of water or some other liquid: to become cloudy or turbid.
Of the air: not fresh; impure, polluted.
Originally, morally or religiously wrong; corrupt, sinful; now, morally or legally dubious; shady, sketchy.
Of a colour: not bright: dirty, dull.
Dirty, filthy.
Of water or some other liquid: containing mud or (by extension) other sediment in suspension; cloudy, turbid.
Of or relating to mud; also, having the characteristics of mud, especially in colour or taste.
Of an image: blurry or dim.
Of sound (especially during performance, recording, or playback): indistinct, muffled.
Covered or splashed with, or full of, mud (“wet soil”).
Soiled with feces.
Of light: cloudy, opaque.
Of speech, thinking, or writing: ambiguous or vague; or confused, incoherent, or mixed-up; also, poorly expressed.
Not clear.
The edible mud crab or mangrove crab (Scylla serrata).