形容詞 perverse:

1. marked by a disposition to oppose and contradict
2. resistant to guidance or discipline
   同義詞：contrary, obstinate, wayward
3. marked by immorality; deviating from what is considered right or proper or good
   同義詞：depraved, immoral, perverted, reprobate

1. Given to or marked by willful, often perverse deviation from what is desired, expected, or required in order to gratify one's own impulses or inclinations.
   任性的具有或以任性為特征的，通常與為了滿足某人自己的沖動或癖好所期待、盼望或要求的完全相反
2. Being at variance with what is right, proper, or suitable; perverse.
   邪惡的與正確的、合適的、適宜的事不一致的; 乖張的
3. We all wanted to go tomorrow, but she had to be perverse and insisted on going today.
   我們都想明天去，但她十分任性偏要今天去。
4. She gets a perverse satisfaction from making other people embarrassed.
   她有一種不正常的心態(tài)，以使別人難堪來取樂。

per.verse

adj.（形容詞）
Directed away from what is right or good; perverted.
不正當?shù)?，墮落的：從正確或好的事物上偏離的；墮落的
Obstinately persisting in an error or a fault; wrongly self-willed or stubborn.
執(zhí)拗的，剛愎的：頑固地堅持錯誤和過失的；錯誤地自以為是的或倔強的

Marked by a disposition to oppose and contradict.
故意作對的：以反對或對抗性情為特征的
Arising from such a disposition.See Synonyms at contrary
有悖常情的：產生這種反常意向的參見 contrary
Cranky; peevish.
反復無常的；易怒的

來源：
Middle English pervers
中古英語 pervers
from Old French
源自 古法語
from Latin perversus [past participle of] pervertere [to pervert] * see pervert
源自 拉丁語 perversus [] pervertere的過去分詞 [使墮落，使反常] *參見 pervert

【引伸】
perverse.ly
adv.（副詞）
perverse.ness
n.（名詞）