gra·tis 
/ˈgrætəs/ adverb
/ˈgrætəs/ adverb — used to indicate that no money is paid for something ▪ The food was supplied gratis [=for free; at no cost; without charge] by a local caterer.
— gratis adjective
▪ The food was gratis. [=free] ▪ gratis hotel accommodations
▪ The food was gratis. [=free] ▪ gratis hotel accommodations
