名詞 inverse:

1. something inverted in sequence or character or effect
   同義詞：opposite

形容詞 inverse:

1. reversed (turned backward) in order or nature or effect
   同義詞：reverse
2. opposite in nature or effect or relation to another quantity

1. This is the inverse of his earlier proposition.
   這和他早些時候提的建議截然相反。

in.verse

adj.（形容詞）
Reversed in order, nature, or effect.
相反的：在次序、本質(zhì)或作用方面相反的
Mathematics Of or relating to an inverse or an inverse function.
【數(shù)學(xué)】 反的：屬于或關(guān)于反數(shù)或反函數(shù)的
Archaic Turned upside down; inverted.
【古語】 顛倒的：上下顛倒的；倒置的
n.（名詞）

Something that is opposite, as in sequence or character; the reverse.
相反的事物：在順序或性質(zhì)方面相反的事物；對立面
Mathematics One of a pair of elements in a set whose result under the operation of the set is the identity element, especially:
【數(shù)學(xué)】 反數(shù)：集合中一對元素之一，其在集合中的運(yùn)算結(jié)果為單位元素，特指
The reciprocal of a designated quantity.Also called multiplicative inverse
倒數(shù)：指定數(shù)的倒數(shù)也作 multiplicative inverse
The negative of a designated quantity.Also called additive inverse
負(fù)數(shù)：指定數(shù)的負(fù)數(shù)也作 additive inverse

來源：
Middle English
中古英語
from Latin inversus [past participle of] invertere [to invert] * see invert
源自 拉丁語 inversus [] invertere的過去分詞 [使倒置] *參見 invert

【引伸】
inverse.ly
adv.（副詞）