"Possibility" doesn't have a prefix. You could add the prefix im- to it to make the word impossibility.
You could add the prefix ad- to it to make the word advantage.
You could add the prefix sur- to it to make the word surround.
The current prefix is ex-. You could add the prefix in- to it to make the word inexcusable.
The current prefix is im-. You could add the prefix un- to it to make the word unimportant.
Prefix could be:MetaAltiMegaNeo
To add a prefix to the word "definitely," you could use "in-" to form "indefinitely."
"Possibility" doesn't have a prefix. You could add the prefix im- to it to make the word impossibility.
You could add the prefix af- to it to make the word affluent.
endo
You could add the prefix ad- to it to make the word advantage.
You could add the prefix sur- to it to make the word surround.
You could add the prefix im- to it to make the word impossible.
In the word "inform", in- is a prefix. You could add the prefix mis- to it to get misinform.
The current prefix is ex-. You could add the prefix in- to it to make the word inexcusable.
The current prefix is im-. You could add the prefix un- to it to make the word unimportant.
"Social" doesn't have a prefix. You could add the prefix un- to it to make the word unsocial.