as opposed to
alone, lone, only, singular, sole, solitary, special, sui generis, unique
single, solo, unaccompanied, unattended, incomparable, inimitable, matchless, peerless, unequaled (or unequalled), unmatched, unparalleled, unrivaled (or unrivalled), unsurpassable, unsurpassed, distinct, distinctive, individual, separate, nonce