Contaminate \Con*tam"i*nate\ (k[o^]n*t[a^]m"[i^]*n[=a]t), 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.

Shall we now
Contaminate our figures with base bribes? --Shak.

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

Syn: To pollute; defile; sully; taint; tarnish; soil; stain;
corrupt.

contaminating \contaminating\ 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]