Muddy \Mud"dy\, a. [Compar. Muddier; superl. Muddiest.]

1. Abounding in mud; besmeared or dashed with mud; as, a muddy road or path; muddy boots.

2. Turbid with mud; as, muddy water.

3. Consisting of mud or earth; gross; impure.

This muddy vesture of decay. --Shak.

4. Confused, as if turbid with mud; cloudy in mind; dull; stupid; also, immethodical; incoherent; vague.

Cold hearts and muddy understandings. --Burke.

Dost think I am so muddy, so unsettled. --Shak.

5. Not clear or bright. --Swift.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Muddy \Mud"dy\, v. t. [imp. & p. p. Muddied; p. pr. & vb. n. Muddying.]

1. To soil with mud; to dirty; to render turbid.

2. Fig.: To cloud; to make dull or heavy. --Grew.

Source: Webster's Revised Unabridged Dictionary (1913)