1 abandoned, apart, by itself, by oneself, deserted, desolate, detached, forlorn, forsaken, isolated, lonely, lonesome, only, on one's tod (slang) out on a limb, separate, single, single-handed, sole, solitary, unaccompanied, unaided, unassisted, unattended, uncombined, unconnected, under one's own steam, unescorted
2 incomparable, matchless, peerless, singular, unequalled, unique, unparalleled, unsurpassed
Antonyms
1 accompanied, aided, among others, assisted, escorted, helped, jointly, together