1. A Presentation Created by TEACHERS UNLEASHED
Prefixes, Suffixes, Affixes
and Root Words
A Presentation Created by
TEACHERS UNLEASHED

2. Root words and Base words
Root Words and Base Words are the same.
Root words and base words are the most basic part of a word.
If you add an affix to a root or base word you change the meaning of the word.
“Cook” is a base word.

3. Affixes un+cook+ed=uncooked
Affixes are word parts that change the meaning of a root or base word.
Prefixes and Suffixes are both Affixes.
un+cook+ed=uncooked
Affix
Affix

4. Prefixes un+cook+ed=uncooked
Prefixes are word parts (affixes) that comes at the beginning of the root word or base word.
un+cook+ed=uncooked
Prefix
Affix

5. Suffix un+cook+ed=uncooked
Suffixes are word parts (affixes) that come at the end of the root word or base word.
un+cook+ed=uncooked
Prefix
Suffix

6. Prefix:
im-
Meaning:
not
Examples:
impossible
impolite

7. Prefix: in
Meaning:
not
Examples:
invisible
infamous

8. Prefix:
non
Meaning:
not
Examples:
non-stick
non-stop

9. Prefix:
dis
Meaning:
not
Examples:
disorganized
disobey

10. Prefix:
mis
Meaning:
wrong
Examples: I
kan
spell
gud.
misread
misspell

11. Prefix: un
Meaning:
not
Examples:
unlucky
unbelievable

12. Prefix:
over
Meaning:
Too much
Examples:
overcooked
overdramatic

13. Prefix:
under
Meaning:
beneath, under
Examples:
underwater
underwear

14. Prefix: re
Meaning:
to do again
Examples:
recount
recycle

15. Prefix:
pre
Meaning:
before
Examples:
preschool
preview

16. Prefix:
sub
Meaning:
under
Examples:
subordinate
submarine

17. Prefix:
super
Meaning:
above, over
Examples:
superhuman
supermarket

18. Prefix:
inter
Meaning:
between
Examples:
intervene
interstate

19. Prefix:
fore
Meaning:
before
Examples:
foresee
forecast

20. Prefix: de
Meaning:
down, away
Examples:
descend
degrade

21. Prefix:
trans
Meaning:
To move
Examples:
transportation
transfer

22. Prefix: Meaning: Examples: semi incomplete, half semicircle
semi-formal

23. Prefix:
mid
Meaning:
In the middle
Example:
midpoint

24. Prefix:
hemi
Meaning:
half
Example:
hemisphere

25. Prefix:
pro
Meaning:
for, forward
Examples:
promotion
protest

26. Prefix:
con
Meaning:
with, together
Examples:
connect
confide

27. Prefix:
com
Meaning:
together
Examples:
communicate
community

28. Prefix: ex
Meaning:
Out of, from
Examples:
exit
exhale

29. Prefix: co
Meaning:
together
Examples:
co-pilot
cooperate

30. Prefix:
multi
Meaning:
many
Examples:
multicolored
multivitamin

31. Prefix:
poly
Meaning:
many
Example:
polygon

32. Prefix:
uni
Meaning:
one
Examples:
unicycle
universal

33. Prefix:
quad
Meaning:
four
Example:
quadrilateral

34. Prefix:
tri
Meaning:
three
Examples:
trimester
tricycle

35. Prefix:
milli
Meaning:
thousand
Examples:
million
millipede

36. Prefix:
centi
Meaning:
hundred
Examples:
100
years
century
centimeter

37. Suffix: er
Meaning:
one who takes part in
Examples:
teacher
driver

38. Suffix:
est
Meaning:
the most
Examples:
strongest
smallest

39. Suffix: ed
Meaning:
to have done
Examples:
raced
played

40. Suffix:
ing
Meaning:
to be doing
Examples:
singing
dancing

41. Suffix: ly
Meaning:
like
Examples:
happily
cowardly

42. Suffix:
ion, tion
Meaning:
action
Example:
construction

43. Suffix:
able, ible
Meaning:
to be able to
Examples:
readable
cleanable

44. Suffix:
ness
Meaning:
the state of
Examples:
happiness
craziness

45. Suffix:
ment
Meaning:
the feeling of
Examples:
refreshment
contentment

46. Suffix: Meaning: Examples: ous, ious, eous having the quality of
adventurous
curious

47. Suffix: Meaning: Examples: Ive, ative, tive condition creative
sensitive

48. Suffix:
ful
Meaning:
to be full of
Examples:
peaceful
thankful

49. Suffix:
less
Meaning:
without
Examples:
thoughtless
helpless

50. Root:
chron
Meaning:
time
Examples:
chronologic
synchronize
chronic

51. Root:
gen
Meaning:
birth/race
Example:
generation

52. Root:
rupt
Meaning:
break
Examples:
erupt
rupture

53. Root:
tele
Meaning:
distance
Examples:
television
telephone
telegraph

54. Root:
migr
Meaning:
change/move
Examples:
migrate
migrating

55. Root:
spect
Meaning:
see
Examples:
inspect
suspect
spectator

56. Root:
sign
Meaning:
mark
Examples:
signature
signal

57. Root:
therm
Meaning:
heat
Examples:
thermal
thermometer
thermostat

58. Root:
graph
Meaning:
write
Examples:
photograph
autograph
biography

59. Root:
scop
Meaning:
see
Examples:
microscope
telescope

60. Root:
loc
Meaning:
place
Examples:
location
local

61. Root:
form
Meaning:
shape
Examples:
uniform
transform

62. Suffix:
ast
Meaning:
star
Examples:
astronaut
astronomy
asteroid

63. Suffix:
opt
Meaning:
sight
Examples:
optical
optometrist

64. Root:
liber
Meaning:
free
Example:
liberty

65. Root:
bio
Meaning:
life
Examples:
biography
biology

66. Root:
flect/flex
Meaning:
bend
Examples:
reflection
flexible

67. Root:
hydr
Meaning:
water
Examples:
hydrant
dehydrate

68. Root:
geo
Meaning:
earth
Examples:
geography
geology

69. Root:
aud
Meaning:
to hear
Examples:
audience
audible