Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class I. Words Expressing Abstract RelationsSection V. Number
2. Determinate Number
90. Duplication.
NOUN:DUPLICATION; doubling &c. v.; gemination, ingemination; reduplication; iteration (repetition) [See Repetition]; renewal.DUPLICATE, facsimile, copy, replica, counterpart (copy) [See Copy].
VERB:DOUBLE; redouble, reduplicate; geminate [rare]; repeat [See Repetition]; renew [See Restoration].
ADJECTIVE:DOUBLE; doubled &c. v.; bicipital, bicephalous, bidental, bilabiate, bivalve, bivalvular, bifold, biform, bilateral, bifarious, bifacial; twofold, twosided; disomatous; duple [rare], duplex; double-faced, double-headed; twin, duplicate, geminous [rare], geminate, ingeminate; second: dual [See Duality].
ADVERB:TWICE, once more; over again (repeatedly) [See Repetition]; as much again, twofold.
secondly, in the second place, again.