"twofold" in the adjective sense
1. double, dual, twofold, two-fold, treble, threefold, three-fold
having more than one decidedly dissimilar aspects or qualities public preaching and private influence"- R.W.Emerson
"a double (or dual) role for an actor"
"the office of a clergyman is twofold
"every episode has its double and treble meaning"-Frederick Harrison
2. double, doubled, twofold, two-fold
twice as great or many
"ate a double portion"
"the dose is doubled"
"a twofold increase"
"twofold" in the adverb sense
1. twofold, two times
by a factor of two
"the price increased twofold last year"
Source: WordNet® (An amazing lexical database of English)
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