The document provides examples of using prefixes like "un-", "dis-", "ir-", "mis-", "re-", "il-", "im-", "non-" and "in-" to form opposites of root words. It gives sentences using words with these prefixes and leaves blanks to be filled in with the correctly prefixed words.

1. Prefix ‘un’ (Opposites)- 1
Put ‘un’ in front of the following words and then put each word in its correct space below.
necessary healthy well punctual employed fair pleasant
Vera: You look rather (a) ____________. Why don't you see a
unwell
doctor?
Alan: Oh no, that's (b) ____________. I've just been working
unnecessary
hard. I'm writing a book.
Vera: In this room? With the windows closed? And you smoke.
unhealthy
That's very (c) __________ . You'll be ill.
unpleasant
Alan: But if I open the windows, some very (d) ___________
smells come in from the chemical factory.
unemployed
Vera: And I hear you've been (e) ____________ since you lost
your job in the library.
unpunctual
Alan: Yes, they said I was (f) ____________ . But in fact I was
unfair
only late a few times. It was very (g) _______ .

2. Prefix ‘un’ (Opposites)- 2
Put ‘un’ in front of the following words and then put each word in its correct space below.
satisfactory friendly conscious usual hurt tidy successful
(a) Just look at your room. It looks awful. It's so _____
untidy
(b) He doesn't like the children in his new school.
They're rather ___________.
unfriendly
(c) I'm afraid your work is ___________ . You'll have
unsatisfactory
to do better.
(d) It was an _________ film. I've never seen one
unusual
like it.
(e) He hit his head on the door as he fell and was
unconscious
___________ for 20 minutes.
(f) I applied for the job but I was ___________.
unsuccessful
(g) Two people were injured in the accident but
fortunately everyone else was _______.
unhurt

3. Prefix ‘un’ (Opposites)- 3
Put ‘un’ in front of the following words and then put each word in its correct space below.
dress wrap tie lock do pack
I like going away for a holiday but the best part
is coming home again. I arrive home. I (a)
________the door of my flat. I put my suitcase
unlock
on the floor and start to (b) _______ it. I take out
unpack
the things I have bought on holiday. I (c)
______the string. I carefully (d) ________ them,
untie unwrap
look at them and put them on the table. I feel
tired but very happy. I go into the bedroom. I (e)
______my jacket and shoes. I take them off. I (f)
undo
______and I have a bath. I relax. I'm home
undress
again.

4. Prefixes ‘un’ ‘dis’ (Opposites)- 4
.
(a) un
a(n) _____ comfortable chair
(b) un
a(n) _____ believable story
(c) un
a(n) _____ punctual train
(d) dis
a(n) _____ respectful pupil
(e) a(n) _____ popular man
un
(f) a(n) _____ honest shopkeeper
dis
(g) a(n) _____ lucky accident
un
(h) a(n) _____ familiar city
un
(i) a(n) _____ satisfied customer
dis
(j) a(n) _____ grateful child
un
(k) a(n) _____ united party
dis
(I) to _______ lock a door
un

5. Prefixes ‘un’ ‘dis’ (Opposites)- 5
.
(m) to _____ obey an order
dis
(n) to ______believe a story
dis
(o) to _____ agree with someone
dis
(p) to _____ load a ship
un
(q) to _____ approve of someone
dis
dis
(r) to _____ Iike cheese
(s) to _____ button a jacket
un
dis
(t) to _____ appear round the corner
un
(u) to _____ cover buried treasure
(v) to _____ trust a politician
dis

6. Prefixes ‘ir’ ‘il’ ‘im’ ‘in’
(Opposites) - 6
.
(a) an ______ resistible temptation
ir
(b) an ______ possible plan
im
(c) il
an ______ legal business deal
(d) an ______ accurate calculation
in
(e) im
an ______ mature young man
(f) an ______ moral action
im
(g) an ______ convenient arrangement
in
(h) an ______ logical answer
il
(i) ir
an ______ responsible boy
(j) an ______ patient motorist
im
(k) an ______ secure feeling
in

7. Prefixes ‘ir’ ‘il’ ‘im’ ‘in’
(Opposites) - 7
.
(I) an ______ relevant question
ir
(m) an ______ polite letter
im
(n) il
an ______ literate person
(o) ________ frequent buses
in
(p) il
________ legible handwriting
(q) an ______ curable illness
in
(r) an ______ regular train service
ir
(s) an ______ dependent country
in
(t) in
________ formal clothes
(u) an ______ replaceable work of art
ir
(v) an ______ expensive present
in

8. Prefixes ‘ir’ ‘il’ ‘im’ ‘in’ ‘dis’ - 8
Put each of the following words in the correct space using the prefixes above.
convenient polite formal honest regular correct legal
(a) I’m afraid the buses here are very ir________ . I
regular
sometimes have to wait an hour.
(b) This information is in______ . The train leaves at 3.10,
correct
not at 3.20.
(c) legal
The use of certain dangerous drugs is il______ . It’s
against the law.
(d) His house isn’t near the shops, transport or his work.
It’s in a very in________ place.
convenient
(e) She didn’t say ‘please’ or ‘thank you’. She was very
im______ .
polite
(f) It’s not a special occasion. Just wear ordinary,
formal
in______ clothes.
(g) She steals. She tells lies. She’s completely dis ______
honest

9. Prefixes ‘dis’ ‘in’ ‘ir’ ‘mis’ ‘re’ - 9
Add a prefix (dis-, in-, ir-, mis- or re-) to the following root words,
then fill the gaps in the sentences below.
1 It was very dishonest of her to cheat in the examination.
2 It was very irresponsible of you to go away for the weekend without telling your
parents where you were.
3 It is a great disadvantage nowadays not to be able to drive - especially when
applying for a job.
4 You don't need to wear a suit or a jacket; it's going to be a very informal party.
5 I'm not very happy with this essay. I think I’ll rewrite it.
6 17 plus 18 doesn't make 46. That's incorrect . The right answer is 35.
7 There was an amusing misprint in today's newspaper. Instead of saying 'The choir
often sings for charity' it said, 'The choir often sins for charity'.
8 This year our country will have been independent for years.
9 'I think shops should be closed on Sundays.' 'I disagree ! I think they should be
open seven days a week.'
10 I dislike all animals -especially dogs. My sister, on the other hand, loves them.

10. Prefixes ‘il’ ‘im’ ‘non’ ‘un’ - 10
Add a prefix (il-, non-, im- or un-) to the following root words,
then fill the gaps in the sentences below.
1 I would never make a good teacher - I'm far too impatient .
2 Most modern cities are lonely, dangerous and rather unfriendly places.
3 In Britain it is illegal to drive a car without insurance and road tax.
4 Because of the bad weather it is uncertain whether the open-air concert will
take place or not.
5 The Indian leader, Gandhi, was a great believer in non-violence . He believed
protests and demonstrations should be peaceful ones.
6 No person can live to the age of 300 - it's impossible .
7 Don't believe a word he tells you. It's all untrue !
8 Pass me a cushion please, Paul. This chair's very uncomfortable .
9 Her children are very impolite and never say 'Please' or ‘Thank you'.
10 I've been unemployed for three months now. I really must get a job soon.