perversity

n.

乖僻；倔强；任性；刚愎

1. He refused to attend out of sheer perversity.
   他拒不听从纯属任性固执。
2. Inclination as well as perversity made the decision easy.
   倾慕再加上任性便不难作出决定了。
3. The best of us have a spice of perversity in us.
   在我们最出色的人身上都有任性的一面。
4. It is not simple moral perversity that keeps sex and violence on the air.
   性和暴力的节目广为传播，这不单纯是道德沦丧。

Perversity in public service performance measurement
Idols of Perversity : Fantasies of Feminine Evil in Fin-de-Siècle Culture
"Perversity, Futility, Jeopardy": An Economic Analysis of the Attack on Gun Control
The perversity of preferences: GSP and developing country trade policies, 1976–2000
Polymorphic Perversity: Crystal Structures with Many Symmetry-Independent Molecules in the Unit Cell ?
The Perversity of Preferences : The Generalized System of Preferences and Developing Country Trade Policies, 1976-2000
Could disease-modifying HIV vaccines cause population-level perversity?
The Organization of Discipline: From Performance Management to Perversity and Punishment
The rhetoric of reaction: Perversity, futility, jeopardy, by Albert 0. Hirschman. Cambridge and London: Belknap Press of Harvard Uni...
Tweaking, bombing, dabbing and stockpiling: the emergence of mephedrone and the perversity of prohibition