Hi Caetano!
The prefix "παρά" has many meanings. The most common ones are the following:
1. It usually indicates exaggeration and it could be translated as "over".
Examples: παραφορτώνω = I overload
παρακοιμάμαι = I oversleep
2. It indicates that something is done in front of the others:
παραδέχομαι = admit
3. It shows opposition:
παραβαίνω = disobey
4. It shows that something is done incorrectly
παρακούω = mishear
"παραμιλάω" means "I talk in my sleep" , I mutter
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Vasiliki Baskou, Instructor/Director, https://learn-greek-online.com.