This is the 17069th most frequent Polish word.
wyśpi
"Wyśpi" means "will sleep well" or "will get enough sleep" (third person singular, future tense).
The verb 'wyśpi' is in its future form and reflexive 'się', meaning that Maria will rest properly by sleeping well.
Maria wyśpi się po długim dniu pracy.
Maria will have a good sleep after a long working day.
Here, 'wyśpię' is first person singular future tense, showing the speaker plans to gain sufficient rest by sleeping.
Gdy się wyśpię, będę bardziej skoncentrowany.
When I have slept well, I will be more focused.
In this example, 'wyśpi się' indicates habitual action referring to adequate rest by sleeping well before an event.