gratis

As a noun complement

is complement, thing added that makes a whole.

As an adjective gratis is

(l), without (l).

As adjectives the difference between gratis and complimentary

is that gratis is free, without charge while complimentary is in the nature of a compliment.

As an adverb gratis

is free, without charge.

As a verb donate

is to make a donation; to give away something of value to support or contribute towards a cause or for the benefit of another.

As an adjective gratis is

(l), without (l).

As adverbs the difference between gratis and supply

is that gratis is free, without charge while supply is supplely: in a supple manner, with suppleness.

As an adjective gratis

is free, without charge.

As a verb supply is

(provide, make available for use) To provide (something), to make (something) available for use.

As a noun supply is

the act of supplying.

Probono is likely misspelled.

Probono has no English definition.

As an adverb gratis

is free, without charge.

As an adjective gratis

is free, without charge.

As an adjective gratis is

(l), without (l).

As adjectives the difference between costly and gratis

is that costly is of high cost; expensive while gratis is (l), without (l).

As a noun gift

is something given to another voluntarily, without charge.

As a verb gift

is to give as a gift.

As an adverb gratis is

free, without charge.

As an adjective gratis is

free, without charge.

As a proper noun grant

is and a scottish clan name, from a nickname meaning "large".

As an adjective gratis is

(l), without (l).