Today we will learn about prefixes

il-, im-, in-, ir- not

illegal

• adjective• not within the law; not acceptable

immobile

• adjective• not being able to move; not movable;

motionless

impaired

• adjective• not of full quality, ability, or strength;

damaged

impede

• verb• to not be able to move forward; to block the

passage

inactive

• adjective• not in use; idle; not active

incapable

• adjective• unable; not having the ability

irregular

• adjective• not following a pattern; not regular

irreversible

• adjective• not able to change back to former state;

impossible to revert back

Use the appropriate word for each of the sentences

1. Did you know that it’s ____ to ride in a car without your seatbelt in some states?

2. Her dress had an ____ pattern that was very colorful.3. Even though he tried, he seemed ____ of keeping his room clean.4. The doctor warned her that the surgery was ____, so she needed to

be sure that she wanted it done.5. The chipmunk was hibernating, so it was ____.6. Brenton had ear surgery because a tumor resulted in _____ hearing.7. Without tires, the car was certainly ____.8. The orange cones in the road were placed there to ____ drivers from

ruining the new cement.immobile impede inactive irreversibleillegal impaired irregular incapable