gratis
adverb
COMMERCE /ˈɡrætɪs/ ukuswithout asking for any payment:
He offered his services gratis to those in need.
They gave us the film rights gratis.
gratis
adjective
COMMERCE /ˈɡrætɪs/ ukusavailable without payment:
Airport parking is gratis.
All food is gratis, but they charge for the drinks.