Unused1. (a.) Not used; as, an unused book; an unused apartment.
2. (a.) Not habituated; unaccustomed.
Thesaurus Entries
a stranger to, abandoned, as a bonus, callow, derelict, dewy, disaccustomed, disused, ever-new, evergreen, extra, firsthand, fledgling, for lagniappe, fresh, given up, green, held back, held in reserve, held out, idle, ignorant, immature, in abeyance, in hand, inexperienced, intact, left, leftover, maiden, maidenly, mint, neglected, neoteric, nestling, net, new, new to, odd, original, outstanding, over, over and above, overplus, pristine, put aside, put by, raw, remaining, remanent, reserve, rusty, saved, sempervirent, spare, stored, superfluous, supernumerary, surplus, surviving, suspended, to spare, unaccustomed, unaccustomed to, unacquainted with, unapplied, unbeaten, unconsumed, unconversant with, undeveloped, unemployed, unexercised, unexpended, unfamiliar with, unfledged, unhabituated, unhandled, unhardened, uninitiated in, uninured, unpracticed, unseasoned, unspent, untapped, untouched, untrained, untried, untrodden, unused to, unutilized, unwonted, vernal, virgin, virginal, waived, weaned, young