v. t. [ imp. & p. p. Contaminated p. pr. & vb. n. Contaminating ] [ L. contaminatus, p. p. of contaminare to bring into contact, to contaminate, fr. contamen contagion, for contagmen; con- + root of tangere to touch. See Contact. ] To soil, stain, or corrupt by contact; to tarnish; to sully; to taint; to pollute; to defile. [ 1913 Webster ]

Shall we now
Contaminate our figures with base bribes? Shak. [ 1913 Webster ]

I would neither have simplicity imposed upon, nor virtue contaminated. Goldsmith.

Syn. -- To pollute; defile; sully; taint; tarnish; soil; stain; corrupt. [ 1913 Webster ]

a. Contaminated; defiled; polluted; tainted. “Contaminate drink.” Daniel. [ 1913 Webster ]

adj. 1. containing undesired or infective microorganisms.
Syn. -- dirty, infected. [ WordNet 1.5 ]

2. rendered impure by addition of deleterious substances; as, had to boil the contaminated water.
Syn. -- polluted. [ WordNet 1.5 ]

3. 1 (Computers) damaged by inclusion of incorrect data or information not belonging; as, The file was contaminated by a buggy editor.
Syn. -- corrupted. [ PJC ]

4. appearing unethical due to a questionable source or motives; -- of money or activities; as, The fund was contaminated by a large donation from a mobster.
Syn. -- tainted. [ PJC ]

adj. spreading contamination; especially radioactive contamination. clean
Syn. -- dirty. [ WordNet 1.5 ]

2. causing moral or behavioral degredation. the contaminating influence of violent movies
Syn. -- corrupting. [ WordNet 1.5 +PJC ]

n. [ L. contaminatio. ] The act or process of contaminating; pollution; defilement; taint; also, that which contaminates. [ 1913 Webster ]