gratuitus
Gratuitus is a Latin adjective meaning free, given freely, or without charge, and it describes things done or provided without payment or obligation. In classical usage it could denote acts of generosity or things that are voluntary rather than compulsory. The term is the etymological ancestor of the English adjective gratuitous.
The English word gratuitous is derived from Latin gratuitus, ultimately linked to gratis, meaning free of charge.
Usage and nuance: in legal or contractual contexts, gratuitous can describe services or gifts rendered without
See also: gratis, gratuit, gratuitousness. The term is widely cognate with modern Romance-language words meaning free