Costing nothing.

synonyms: complimentary, costless, free, gratuitous.

Roget 815: cheap; low, low priced; moderate, reasonable; inexpensive, unexpensive^†; well worth the money, worth the money; magnifique et pas cher [Fr.]; good at the price, cheap at the price; dirt cheap, dog cheap; cheap, cheap as dirt, cheap and nasty; catchpenny; discounted etc. 813.    half-price, depreciated, unsalable.    gratuitous, gratis, free, for nothing; costless, expenseless^†; without charge, not charged, untaxed; scotfree, shotfree^†, rent-free; free of cost, free of expense; honorary, unbought, unpaid.    ... show more

Roget 748: free, free as air; out of harness, independent, at large, loose, scot-free; left alone, left to oneself.    in full swing; uncaught, unconstrained, unbuttoned, unconfined, unrestrained, unchecked, unprevented^†, unhindered, unobstructed, unbound, uncontrolled, untrammeled.    unsubject^†, ungoverned, unenslaved^†, unenthralled^†, unchained, unshackled, unfettered, unreined^†, unbridled, uncurbed, unmuzzled.    unrestricted, unlimited, unmitigated, unconditional; absolute; discretionary etc. (optional) 600.    unassailed, unforced, uncompelled.    unbiassed^†, spontaneous.    free and easy; at ease, at one's ease; degage [Fr.], quite at home; wanton, rampant, irrepressible, unvanquished^†.    exempt; freed etc. 750; freeborn; autonomous, freehold, allodial^†; gratis etc. 815; eleutherian^†.    unclaimed, going a begging.    ... show more

Roget 784: giving etc. v.; given etc. v.; allowed, allowable; concessional^†; communicable; charitable, eleemosynary, sportulary^†, tributary; gratis etc. 815; donative^†.    ... show more

Roget 808: not paying, non-paying, non-performing; in debt etc. 806; behindhand, in arrear^†, behind in payments, in arrears; beggared etc. (poor) 804; unable to make both ends meet, minus; worse than nothing; worthless.    insolvent, bankrupt, in the gazette, gazetted.    unpaid etc. (outstanding) 806; gratis etc. 815; unremunerated.    ... show more

Polish: bezpłatny, darmowy, nieodpłatny

Without payment:
— I'll give you this gratis.

synonyms: for free, free of charge.