Free

безплатен

bezplaten

(software: with very few limitations on distribution or improvement)

незает

nezaet

(not in use)

неизползван

neizpolzvan

(not in use)

свобо́ден

svobóden

(not imprisoned)

свободен

svoboden

(without obligations)

безплатно

bezplatno

(without needing to pay)

освободя́

osvobodjá

(to make free, set at liberty)

освобожда́вам

osvoboždávam

(to make free, set at liberty)