This is the 78th most frequent Czech word.
navíc
"Navíc" means "in addition" or "extra."
The word 'navíc' here is used to indicate an additional action or item.
Koupil jsem si chleba a navíc i máslo.
I bought bread and additionally butter.
In this case, 'navíc' conveys a surplus or extra amount.
Má navíc spoustu talentu a dovedností.
He has an abundance of talent and skills.
Here, 'navíc' is used to emphasize or add to the interpretation of the statement, comparable to 'moreover' or 'furthermore'.