solitary

1 being the one or ones of a class with no other members a solitary example of truth-stretching is hardly grounds for branding the man a congenital liar Synonyms alone, lone, one, one-off, singular, sole, only, special, sui generis, uniqueRelated Words single, solo, unaccompanied, unattended; incomparable, inimitable, matchless, peerless, unequaled (or unequalled), unmatched, unparalleled, unrivaled (or unrivalled), unsurpassable, unsurpassed; distinct, distinctive, individual, separate; nonceNear Antonyms divers, manifold, multifarious, myriad; assorted, heterogenous, miscellaneous, mixed, motley, patchwork, promiscuous, varied; popular, prevailing, prevalent, rampant; perennial, recurrent, repeated

2 not being in the company of others a solitary sailboat was the only object on the horizon Synonyms lone, lonely, lonesome, single, alone, solo, unaccompaniedRelated Words unattended, unchaperoned; forlorn, friendless; cloistered, disassociated, hermetic (also hermetical), insulated, isolate, isolated, remote, retired, secluded, withdrawn; quarantined, segregated, separated, sequestered; separate, unattached, unconnected, unlinked; detached, disconnected, disjointed, dissociated, disunited, divided, fractionated; abandoned, adrift, deserted, desolate, forgotten, forsaken, lorn, neglectedNear Antonyms attended, chaperoned, escorted; adjacent, adjoining, communicating, contiguous, neighboring, next-door; attached, connected, coupled, linkedAntonyms accompanied