turbid

Concise Oxford English Dictionary © 2008 Oxford University Press:
turbid /ˈtəːbɪd/

▶adjective

• 1 (of a liquid) cloudy, opaque, or thick with suspended matter.

• 2 confused or obscure.

– derivatives
turbidity noun,
turbidly adverb,
turbidness noun.

– origin ME: from L. turbidus, from turba ‘a crowd, a disturbance’.