TWOFOLD
double, doubled, twofold, two-fold
(adjective) twice as great or many; “ate a double portion”; “the dose is doubled”; “a twofold increase”
double, dual, twofold, two-fold, treble, threefold, three-fold
(adjective) 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
twofold, two times
(adverb) by a factor of two; “the price increased twofold last year”
Source: WordNet® 3.1
Etymology
Adjective
twofold (not comparable)
Double; duplicate; multiplied by two.
Having two parts, especially two different parts.
Synonyms
• (double): double, duplicate; see also twofold
• (having two parts): twin; see also dual
Adverb
twofold (not comparable)
In a double degree; doubly.
Synonyms
• double; see also twice
Source: Wiktionary
Two"fold`, a. Etym: [Cf. Twifold.]
Definition: Double; duplicate; multiplied by two; as, a twofold nature; a
twofold sense; a twofold argument.
Two"fold`, adv.
Definition: In a double degree; doubly.
Source: Webster’s Unabridged Dictionary 1913 Edition