Affixes generally have no meaning by their own but can form meaningful words by sitting before/after the stems. In the case of prefixed words, affixes sit before the stems of the words.
“A prefix is an affix which is placed before the stem of a word.” – Wilson (2011)
A prefix is “a letter or group of letters that is added at the beginning of a word to change its meaning.” – Merriam Webster.
Example:
- Prefix = ‘fix’ is a stem and ‘pre’ is a prefix which changes the meaning of the stem and creates a new word.
- Antibiotic
- Awake
- Symphony
- Hemisphere
List of Common Prefixes:
Prefix
|
Meaning
|
Examples
|
a
|
on
in
from
up
not
without
|
aboard (onboard)
asleep (in sleep)
arise (rise from)
awake (wake up)
atheist (not a theist)
apathy (without pathy)
|
ab
|
bad
not
|
abuse (bad use)
abnormal (not normal)
|
ad
|
to
|
adjoin (to join)
|
ante
|
before
|
antedate (before date)
|
anti
|
against
opposite of
|
antiseptic (against septic)
anticlimax (opposite of climax)
|
auto
|
self
|
autobiography (self-biography)
|
bi
|
two
|
bilateral (two sides)
|
co
|
with
|
co-exist (exist with)
|
de
|
down
reversal
|
detrain (down train)
demerit
|
di
|
two
|
dioxide (two oxides)
|
dia
|
through
|
diameter
|
dis
|
not
opposite
|
disallowed (not allowed)
dishonor (opposite of honor)
|
en
|
on
in
|
enact (on action)
encage (in the cage)
|
ex
|
out of
former
|
extract (out of anything)
ex-student
|
il
|
opposite of
|
illegal (opposite of legal)
|
im
|
the opposite of
|
impossible (opposite of possible)
|
in
|
the opposite of
|
inability (opposite of ability)
|
ir
|
the opposite of
|
irrational (opposite of rational)
|
inter
|
within
|
interschool (within the school)
|
fore
|
before
|
foretell (telling before)
|
hemi
|
half
|
hemisphere (half sphere)
|
homo
|
like/same
|
homogeneous (same species)
|
hyper
|
beyond/over
|
hypersensitive (oversensitive)
|
hypo
|
under
|
hypothesis (under thesis)
|
mal
|
bad
ill
|
malpractice (bad practice)
malnutrition (ill nutrition)
|
mis
|
bad
|
misconduct (bad conduct)
|
mono
|
single
|
monologue (single logue)
|
non
|
not/opposite
|
nonsense (opposite of sense)
|
post
|
after
|
postmodern (after modern)
|
pre
|
before
|
pretext (before text)
|
peri
|
round
|
perimeter (round meter)
|
re
|
again
|
regain (again gain)
|
semi
|
half
|
semifinal (half final)
|
sub
|
backup/alternate
|
subway (alternate way)
|
super
|
over/beyond
|
supernatural (beyond natural)
|
to
|
this
|
today (this day)
|
trans
|
across
|
transform (across form)
|
ultra
|
beyond
|
ultramodern (beyond modern)
|
un
|
not/opposite
|
unable (not able)
|
vice
|
alternative of
|
vice-captain (alternative of captain)
|
Source: Learn Grammar
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