What are example words of im in prefixes?

You're likely thinking of the prefix "im-", which means "not" or "without". Here are some example words with the prefix "im-":

* impossible

* imperfect

* impatient

* impolite

* immature

* immoral

* immobile

* impartial

* impersonal

* impractical

* improbable

* improper

* impure

* immediate

* immigration

Keep in mind that the prefix "im-" can be used in various combinations with different root words.