
Prefixes
il— means before
ileum
ill— means not
illegible, illusion
im— means before
impulse, improve
in— also means not
inability, inconsistent
in— or it could mean into
income, influx, ingrain, invite
infra— below
infrared, infrastructure
inter— among, between
interchange, interfere, interlude
irr— means not
irregular, irresistible
iso— same
isomer, isosceles
Exercises
- Look at the list of examples of prefixes. Can you add a suffix onto any of them to create different words?
- Can you think of suffixes that start with the letter I?
Special reading assignment
- His interest is in iconography.
- Going into the interior, his instrument indicated that a new installation is important.