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Synonyms for double

modified

twofold, twice, paired, coupled, twin, binary, binate, geminate, doubled, redoubled, duplex, renewed, dual, repeated, second, as much again, duplicated, ambiguous, double-barreled, duple, two-ply, folded; see also twice, twin.

Antonyms single*, alone, apart.

on the double*

verb

  1. To make or become double

    make twice as much, duplicate, multiply, fold over; see fold 2, grow 1, increase 1.

  2. To replace

    substitute for, stand in, act for; see substitute 2.

See double in Webster's New World Roget's A-Z Thesaurus II

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