The state of being alone; solitude, isolation.

By oneself, solitary. / (predicatively, chiefly in the negative) Lacking peers who share one's beliefs, experiences, practices, etc. / (obsolete) Apart from, or exclusive of, others.

By oneself; apart from, or exclusive of, others; solo. / Without outside help. / Not permitting anything further; exclusively. / Not requiring anything further; merely.

plural of aloneness

(archaic) Exclusive; sole; only.

(archaic) Only; merely; singly.

(nonstandard) More alone or isolated.

plural of Alon

A male given name from Hebrew, variant of Elon. / A surname, from given names. / A surname from Tagalog.

(idiomatic, chiefly in the negative) Much less; to say nothing of; used after one negative clause to introduce another, usually broader and more important clause, whose negation is implied by the negation of the first. However either of these instances mentioned can be applied with the use of let alone.