gratis
1. [ adverb ] without payment
Synonyms: free_of_charge for_free
Examples:

"I'll give you this gratis"

2. [ adjective ] costing nothing
Synonyms: free costless gratuitous complimentary
Examples:

"complimentary tickets"

Related terms: unpaid
Similar spelling:   grits
  groats
  greatest
  Gritz
  Gratz
  grotesque
  gritstone
  graticule