1. Prefixes
Lesson 7

2. Lesson 7 – Prefixes
A prefix is a word part added to the beginning of a base word.
Once you know the meaning of a prefix, you can figure out the meaning of a familiar base word that has that prefix.

3. Prefix Meaning Example re un dis mis in im ir, il non pre post inter
again, back
rethink, replace un
not, the opposite of
unknown, unhappy
dis
not, the opposite of, lack of
dislike, disinfect, disorder
mis
wrongly, badly
misplace, misbehave in
not, without, in, into
incomplete, inexperience im
impatient, imbalance
ir, il
not, without
irregular, illogical
non
not, the opposite of, without
nonworking, nonsense
pre
before, in preparation for
preview, preschool
post
after, later, behind
postscript
inter
between or among, together
international, interlace bi
having two of, twice
bicycle, biweekly ex
out of or from, previous
ex-president

4. Lesson 7 – Prefixes impossible not possible interaction
Directions: Identify the prefix and give the meaning of each word.
impossible
not possible
interaction
action among each other
recopy
copy again
regain
gain again
disobey
not obey