Prefixes il,im,in,ir,

not within the law; not acceptable

• irreversible

• illegal

• proceed

• impede

not following a pattern; not regular

• illegal

• immobile

• irregular

• impared

not able to change back to a former state; impossible to revert back.

• illegal

• irreversible

• incapable

• impede

not able to move; not movable; motionless

• impaired

• impede

• incapable

• immobile

Unable; not having the ability.

• incapable

• illegal

• impaired

• inactive

Not of full quality; ability; or strength; damage.

• immobile

• impaired

• inactive

• irregular

To not be able to move forward; to block the passage.

• impede

• impaired

• immobile

• irregular

Not in use; idle; not active.

• immobile

• incapable

• impaired

• inactive