This is the 359th most frequent Romanian word.
liber
Free.
Here, 'liber' indicates availability or being unoccupied.
Acest scaun este liber, poți să te așezi aici.
This chair is free, you can sit here.
The word 'liber' is used as an adjective describing someone's state of being free from obligations or work.
Este o zi frumoasă și sunt liber.
It's a beautiful day and I am free.
In this case, 'liber' metaphorically describes a person's independent or uninhibited nature.