From The Collaborative International Dictionary of English v.0.48:
Alone \A*lone"\, a. [All + one. OE. al one all allone, AS. [=a]n
one, alone. See All, One, Lone.]
1. Quite by one's self; apart from, or exclusive of, others;
single; solitary; -- applied to a person or thing.
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Alone on a wide, wide sea. --Coleridge.
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It is not good that the man should be alone. --Gen.
ii. 18.
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2. Of or by itself; by themselves; without any thing more or
any one else; without a sharer; only.
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Man shall not live by bread alone. --Luke iv. 4.
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The citizens alone should be at the expense.
--Franklin.
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3. Sole; only; exclusive. [R.]
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God, by whose alone power and conversation we all
live, and move, and have our being. --Bentley.
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4. Hence; Unique; rare; matchless. --Shak.
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Note: The adjective alone commonly follows its noun.
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To let alone or To leave alone, to abstain from
interfering with or molesting; to suffer to remain in its
present state.
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From The Collaborative International Dictionary of English v.0.48:
Alone \A*lone"\, adv.
Solely; simply; exclusively.
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