Of light: cloudy, opaque.
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 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).
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.
Sometimes followed by up: to become covered or splashed with mud; to become dirty or soiled.
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.
Transparent; translucent.
(Of a language or notation) the process of inference from premises to conclusion is explicitly laid out.
Clearly expressed, easy to understand; lucid.