Given as a courtesy at no charge:
(Figuratively) Without effort; as a useful side-effect of something that was to be done anyway.
The definition of gratis is free.
(Australian rules football, Gaelic football) Abbreviation of free kick.
Find another word for on-the-house. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for on-the-house, like: complimentary, compliments of the house, for-free, for-nothing, free-of-charge, free of cost, freebie, gratis, gratuitous, no charge and free.