Things to learn in English ( opposites) :
1- abide X abandon
2- ability X disability
3- abele X unable
4- above X below
5- always X never
6- angry X pleased
7- appear X disappear
8- at least X at most
9- beautiful X ugly
10- begin X finish
11- best X worst
12- big X small
13- black X white
14- brave X coward
15- carefully X carelessly
16- certain X uncertain
17- come into use X go out of use
18- costly X cheap
19- day X night
20- descend X ascend
21- different X the same
22- difficult X easy
23- daunt X dauntless
24- early X late
25- easier X more difficult
26- empty X full
27- expensive X inexpensive
28- faster X slower
29- fat X thin
30- faithful X faithless
31- friend X enemy
32- friendly X unfriendly
33- forget X remember
34- glad X sad
35- good X bad
36- godly X godless
37- healthy X unhealthy
38- honest X dishonest
39- hot X cold
40- hopeful X hopeless
41- huge X small
42- important X unimportant
43- include X exclude
44- increase X decrease
45- inside X outside
46- interest X disinterest
47- interested X disinterested
48- interesting X uninteresting
49- large X small
50- lend X borrow
51- left X right
52- legal X illegal
53- less X more
54- light X heavy
55- like X dislike
56- long X short
57- lose X gain
58- love X hate
59- lucky X unlucky
60- maximum X minimum
61- mindful X mindless
62- merciful X merciless
63- modern X old or ancient
64- morning X evening
65- most X least
66- near X far
67- obey X disobey
68- old X new
69- ordinary X extraordinary
70- polite X impolite
71- poor X rich
72- popular X unpopular
73- possible X impossible
74- private X public
75- probably X improbably
76- proud X modest
77- pee X peerless
78- permanent X temporary
79- punish X reward
80- put on X take off
81- put out X start
82- quiet X noisy
83- quietly X noisily
84- real X unreal
85- receive X send
86- regularly X irregularly
87- safe X dangerous
88- satisfied X dissatisfied
89- safely X dangerously
90- scornfully X respectfully
91- sell X buy
92- simple X complicated
93-Similar X dissimilar
94- soft X hard
95- sold X bought
96- sorry X glad
97- south X north
98- start X finish
99- strong X weak
100- true X untrue
101- under X above or over
102- understand X misunderstand
103-unhurt X hurt
104- up X down
105- usual X unusual
106- valuable X valueless
107-vast X narrow
108- virtual X virtue less
109- win X lose
110- worry X steady
111- wrong X right
112-young X old
113- voluntary X compulsory