GRATUITOUS

adj. 1 gratis, free, complimentary, spontaneous The earth is a machine which has, till now, yielded gratuitous service 2 unasked for, unrequested, unsought for, wanton, unprovoked, unsolicited, unlooked-for, uncalled-for, unwelcome, unjustified, unwarranted, baseless, groundless, needless, unfounded, ungrounded, unjustifiable, irrational He seems to derive some twisted pleasure from spreading gratuitous lies about me