gratis

 
Pronunciation: /ˈgratɪs, ˈgrɑː-, ˈgreɪ-/

adverb

  • without charge; free: a monthly programme was issued gratis

adjective

  • given or done for nothing; free: gratis books

Origin:

late Middle English: from Latin, contraction of gratiis 'as a kindness', from gratia 'grace, kindness'