gratuito betyder på engelska

free of charge▼(not requiring any payment - adjective)
adjective
[UK: friː əv tʃɑːdʒ] [US: ˈfriː əv ˈtʃɑːrdʒ]

voluntary▼(working or done without payment)
adjective
[UK: ˈvɒ.lən.tri] [US: ˈvɑː.lən.te.ri]