gratis
From Longman Dictionary of Contemporary Englishgratisgrat‧is /ˈɡrætəs, ˈɡreɪ-/ adjective, adverb FREE/COST NOTHINGdone or given without payment SYN free Medical advice was provided gratis.Examples from the Corpusgratis• Medical advice was provided gratis.From Longman Business Dictionarygratisgrat‧is /ˈgrætɪs, ˈgreɪtɪs/ adverb freeHis work for the charity is performed gratis. —gratis adjectiveThere’s a small charge for some programs; others are gratis.Origin gratis (1400-1500) Latin “out of kindness”, from gratia; → GRACE1