Contaminate

v. t.	1.	To soil, stain, or corrupt by contact; to tarnish; to sully; to taint; to pollute; to defile. [imp. & p. p. Contaminated ; p. pr. & vb. n. Contaminating .] Shall we now Contaminate our figures with base bribes? - Shak. I would neither have simplicity imposed upon, nor virtue contaminated. - Goldsmith.
a.	1.	Contaminated; defiled; polluted; tainted.

Verb	1.	contaminate - make impure; "The industrial wastes polluted the lake" Synonyms: pollute, foul
	2.	contaminate - make radioactive by adding radioactive material; "Don't drink the water--it's contaminated" Antonyms: decontaminate - rid of contamination; "The soil around the housing development had to be decontaminated by the city"

activate, adulterate, alloy, bastardize, befoul, benasty, canker, charge, cheapen, coarsen, confound, cut, debase, debauch, deflower, degenerate, degrade, denaturalize, denature, deprave, desecrate, despoil, devalue, dilute, disease, distort, doctor, doctor up, fortify, foul, harm, injure, irradiate, lace, mess, mess up, misuse, nasty, pervert, poison, prostitute, radiumize, ravage, ravish, rot, spike, spoil, stain, tamper with, tarnish, twist, ulcerate, violate, vitiate, vulgarize, warp, water, water down