Another word for alone
Separate from others
lone, lonely, solitary, separate, lonesome, deserted, forlorn, lorn, isolated, individual, forsaken, desolate, detached, companionless, friendless, unaccompanied, unescorted, abandoned, secluded, apart, by oneself, under one's own power, unassisted, unaided, single-handed, single, widowed, unmarried, unattached, solo, solus (Latin), in solitude, by one's lonesome*.
Antonyms accompanied, attended, escorted.
Exclusive of others
alone, unqualified, denotes the simple fact of being by oneself or itself; solitary and the more poetic lone convey the same sense but suggest more strongly the lack of companionship or association a solitary tree in the meadow a lone wanderer; lonely conveys a heightened sense of solitude and gloom the lonely sentinel walks his post; lonesome suggests a longing or yearning for companionship, often for a particular person the child is lonesome for her motherlet alone
Another word for aloneadjective
Lacking the company of others:companionless, lone, lonely, lonesome, single, solitary, unaccompanied. See include
Set away from all others:apart, detached, isolate, isolated, lone, removed, solitary. See include
Without equal or rival:incomparable, matchless, nonpareil, only, peerless, singular, unequaled, unexampled, unique, unmatched, unparalleled, unrivaled. See same