gratis(s = adj.all) complimentary, costless, free, gratuitous - costing nothing; "complimentary tickets"; "free admission"

   gratis(r = adv.all) for free, free of charge - without payment; "I'll give you this gratis"

   For nothing; without fee or recompense; freely; gratuitously. [1913 Webster]

gratis, adv. & adj. free; without charge.

Etymology:
L, contracted ablat. pl. of gratia favour

N  freedom, liberty, independence, license, facility, scope, range, latitude, play, free play, full play, free scope, full scope, free stage and no favor, swing, full swing, elbowroom, margin, rope, wide berth, Liberty Hall, franchise, denization, free man, freed man, livery man, denizen, autonomy, self-government, liberalism, free trade, noninterference, Monroe Doctrine, immunity, exemption, emancipation, enfranchisement, affranchisement, free land, freehold, allodium, frankalmoigne, mortmain, bushwhacker, freelance, free thinker, free trader, independent, 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, unassailed, unforced, uncompelled, unbiassed, spontaneous, free and easy, at ease, at one's ease, degage, quite at home, wanton, rampant, irrepressible, unvanquished, exempt, freed, freeborn, autonomous, freehold, allodial, gratis, eleutherian, unclaimed, going a begging, freely, ad libitum, ubi libertas ibi patria, free white and twenty-one.

N  giving, bestowal, bestowment, donation, presentation, presentment, accordance, concession, delivery, consignment, dispensation, communication, endowment, investment, investiture, award, almsgiving, charity, liberality, generosity, gift, donation, present, cadeau, fairing, free gift, boon, favor, benefaction, grant, offering, oblation, sacrifice, immolation, lagniappe, pilon, grace, act of grace, bonus, allowance, contribution, subscription, subsidy, tribute, subvention, bequest, legacy, devise, will, dotation, dot, appanage, voluntary settlement, voluntary conveyance, amortization, alms, largess, bounty, dole, sportule, donative, help, oblation, offertory, honorarium, gratuity, Peter pence, sportula, Christmas box, Easter offering, vail, douceur, drink money, pourboire, trinkgeld, bakshish, fee, consideration, bribe, bait, ground bait, peace offering, handsel, boodle, graft, grease, blat, giver, grantor, donor, feoffer, settlor, giving, given, allowed, allowable, concessional, communicable, charitable, eleemosynary, sportulary, tributary, gratis, donative, auctor pretiosa facit, ex dono, res est ingeniosa dare.

N  nonpayment, default, defalcation, protest, repudiation, application of the sponge, whitewashing, insolvency, bankruptcy, failure, insufficiency, run upon a bank, overdrawn account, waste paper bonds, dishonored bills, protested bills, bogus check, bogus cheque, rubber check, bankrupt, insolvent, debtor, lame duck, man of straw, welsher, stag, defaulter, levanter, not paying, non-paying, non-performing, in debt, behindhand, in arrear, behind in payments, in arrears, beggared, unable to make both ends meet, minus, worse than nothing, worthless, insolvent, bankrupt, in the gazette, gazetted, unpaid, gratis, unremunerated.

N  cheapness, low price, depreciation, bargain, good penny worth, snap, gratuity, free quarters, free seats, free admission, pass, free pass, free warren, give-away, freebee, run of one's teeth, nominal price, peppercorn rent, labor of love, drug in the market, deadhead, cheap, low, low priced, moderate, reasonable, inexpensive, unexpensive, well worth the money, worth the money, magnifique et pas cher, good at the price, cheap at the price, dirt cheap, dog cheap, cheap, cheap as dirt, cheap and nasty, catchpenny, discounted, 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, for a mere song, for a song, at cost, at cost price, at prime cost, at a reduction, a bon marche.