Select the INCORRECTLY spelt word.

The correct answer is Ommision.

Let us analyze the given options to find the incorrectly spelt word:

1. Ommision: This word is INCORRECTLY spelt. The correct spelling is Omission (with a single 'm' and double 's'), which means the action of excluding or leaving out someone or something.

2. Aspirant: Correctly spelt. It refers to a person who has ambitions to achieve something.

3. License: Correctly spelt. It refers to a formal permission or official document giving legal authorization.

4. Autonomous: Correctly spelt. It means having the freedom to govern itself or control its own affairs.

Therefore, the word with the incorrect spelling is Ommision.