Adjective threefold has 2 senses
- treble, threefold, triple - three times as great or many; "a claim for treble (or triple) damages"; "a threefold increase"
Antonym: single (indirect, via multiple)
- double, dual, twofold, treble, threefold - having more than one decidedly dissimilar aspects or qualities; "a double (or dual) role for an actor"; "the office of a clergyman is twofold; public preaching and private influence"- R.W.Emerson; "every episode has its double and treble meaning"-Frederick Harrison
Antonym: single (indirect, via multiple)
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Adverbial threefold has 1 sense
- threefold, three times - by a factor of three; "our rent increased threefold in the past five years"
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