gratis
adverb
[ ˈɡratɪs ]
• without charge; free.
• "a monthly programme was issued gratis"
Similar:
free of charge,
free,
without charge,
for nothing,
at no cost,
without payment,
without paying,
freely,
gratuitously,
on the house,
for free,
Opposite:
for a fee,
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’.
free of charge
• without any payment due.
• "a Certificate of Posting is available free of charge at the counter"