Average:
* Avenge: To take revenge for.
* Averse: Having a strong dislike or opposition.
Unkind:
* Unwind: To relax and stop worrying.
* Unlined: Without lining or a lining.
Indicate:
* Indicate: To point out or show.
* Indicate: To be a sign of something.
Note: While "indicate" has two different meanings, it's not strictly considered a homonym since it's the same word with two distinct definitions.