вольный

Etymology
..

Adjective

 * 1) free
 * 2) free, available, at liberty
 * 3) unrestricted
 * 4)  free-style
 * 5) familiar, impudent

Usage notes

 * The meaning "free, available (to do something)" is found primarily in the short form.

Declension
in most meanings:

in the meaning "free, available (to do something)":

Noun

 * 1) free man