per·verse 
(pər-vûrs, pûrvûrs′)
(pər-vûrs, pûrvûrs′)adj.
1. Contrary to what is right or good; wicked or depraved: a perverse world of sinners.
2.
a. Characterized by or resulting from willful opposition or resistance to what is right, expected, or reasonable: "Geneticists have the perverse habit of naming genes by what goes wrong when they mutate" (Richard Dawkins).
b. Willfully opposing or resisting what is right, expected, or reasonable: an understanding of the text that only a perverse reader could reach.
3. Having an effect opposite to what is intended or expected: "Regulation [of child care] to increase quality may have the perverse effect of driving some children into unregulated care" (Kathryn M. Neckerman).
[Middle English pervers, from Old French, from Latin perversus, past participle of pervertere, to pervert; see PERVERT.]
per·versely adv.
per·verseness n.
- deterge
- detergence
- detergency
- detergent
- deteriorate
- deterioration
- deteriorative
- determent
- determinable
- determinableness
- determinably
- determinacy
- determinant
- determinate
- determinately
- determinateness
- determinater
- determination
- determinative
- determinatively
- determine
- determined
- determinedly
- determinedness
- determiner