a. 诽谤的, 中伤的

[法] 诬告的, 诽谤者, 中伤的

[ adj ]
(used of statements) harmful and often untrue; tending to discredit or malign
<adj.all>

Calumniatory \Ca*lum"ni*a*to*ry\, a.
Containing calumny; slanderous. --Montagu.