因为这些词有着完全不同甚至相反的意思。自反义词是一个具有两种含义的词，而且这两种含义恰好相反。但一些严谨的语法学家认为，从专业角度讲，它们是同形异义词。同形同音异义词发音相同；如果发音不同，则为同形异音异义词。自反义词有时也被称为“Janus词”，“Janus”是罗马神话中的两面神的名字。下面我们列举30个英语中常见的自反义词。
英语里的反义词分类?学习英语的人常常会遇到这样的问题：有些单词很奇怪，当你正确地选用了它们时，同时你又会怀疑是不是错选了因为这些词有着完全不同甚至相反的意思，下面我们就来聊聊关于英语里的反义词分类?接下来我们就一起去了解一下吧!
英语里的反义词分类
学习英语的人常常会遇到这样的问题：有些单词很奇怪，当你正确地选用了它们时，同时你又会怀疑是不是错选了。因为这些词有着完全不同甚至相反的意思。
自反义词（contronym，也叫contranym or autoantonym）是一个具有两种含义的词，而且这两种含义恰好相反。语法上说，“自反义词是同音词（是另一个拼写相同但含义不同的词），也是反义词（意思相反的词）。”
但一些严谨的语法学家认为，从专业角度讲，它们是同形异义词（homographs）。同形同音异义词（homonyms）发音相同；如果发音不同，则为同形异音异义词（heteronyms）。
自反义词有时也被称为“Janus词”，“Janus”是罗马神话中的两面神的名字。下面我们列举30个英语中常见的自反义词。
1.Bolt
To separate by fleeing or to hold together (as with a bolt)
2.Bound
Going toward a destination or restrained from moving
3.Buckle
To fasten together (with a buckle) or to bend or collapse from pressure
4.Cleave
To adhere firmly and closely or to split apart
5.Clip
To fasten (as with a paperclip) or to detach with shears (clipping your hair or your hedges)
6.Consult
To give advice or to get advice
7.Custom
A common practice or a specially made item
8.Dust
To cover something with a fine power or to make something clean by brushing or removing dust
9.Enjoin
To order someone to do something or to prohibit someone from doing something
10.Fast
Firmly fixed and unmoving or able to move rapidly
11.Finished
Completed or destroyed
12.Garnish
To add decorative touches (to food or drink) or to take/withhold from (as in wages)
13.Handicap
An advantage given to equalize chances of winning (as in golf) or a disadvantage that makes equality difficult
14.Lease
To rent property or to offer property for rent
15.Left
Departed or remained behind
16.Model
The original, perfect example or a copy
17.Off
Not operating (turn off the light) or operating (the alarm went off)
18.Out
Visible (the stars are out) or invisible (the lights are out)
19.Overlook
To Watch or to fail to notice
20.Oversight
Watchful, responsible care or a mistake made due to forgetfulness or poor supervision
21.Peruse
To skim or to read very carefully
22.Ravel
To separate or to become entangled
23.Rent
To lease something or to offer an something for lease
24.Sanction
To boycott or to approve
25.Screen
To hide or to show (like a movie)
26.Seed
To add seed (seeding the lawn) or to remove seed (seeding a watermelon)
27.Strike
To hit or to miss while trying to hit
28.Trim
To add (decorations) or to take away (extra hair or fabric, for example)
29.Wear
To endure or to deteriorate
30.Weather
To withstand or to be worn away
