What is the meaning of prefix im?

The prefix "im" generally means "not" or "without". It is used to create negative or opposite meanings of words.

Here are some examples:

* impossible - not possible

* imperfect - not perfect

* impatient - not patient

* immature - not mature

* immoral - not moral

Note: The prefix "im" is often used before words starting with "m" or "p". For other letters, the prefixes "in-", "ir-", or "un-" may be used instead.