UNaffected
it is im or un.
im-practical
Unremarkable
Dis
The current prefix is im-. You could add the prefix un- to it to make the word unimportant.
UNEXPERIENCED
misleal
One prefix would be impolite.
The prefix is un-. This prefix means not.
yes, un- is a prefix.
The prefix is un-
the prefix is un-