Unable is not a prefix. The "un" in unable is the prefix.
bi-
untie
unpatriot
dis
Prifix place
anti comes to mind
prifix of derfenet
a prifix
It's not a prefix
Answer?A 1,000,000 sided shape is called a megagon.
unable mis able
Able means "can do". Unable means "cannot do". This could refer to an action, behavior, speech, etc. Examples: I'm unable to say why the experiment failed. I'm unable to walk. I'm unable to hear. I'm unable to move. I'm unable to feel.