double

I

(New American Roget's College Thesaurus)

adj. twofold, duplicate, duplex, dual. —v. t. duplicate, increase, twofold; fold. — n. duplication; twin, counterpart; understudy, stand-in. See copy, similarity, substitution.

- on the double

II

(Roget's IV) modif.

Syn. 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 .

Ant. single*, alone, apart.

• on the double*,

Syn. hastily, rapidly, hurriedly, right away; see quickly 1 .

n.

Syn. duplicate, counterpart, twin, stand-in; see duplicate , equal , substitute .

v.

1. [To make or become double]

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

2. [To replace]

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

III

(Roget's 3 Superthesaurus)

I

n.

duplicate, twin, replica, look-alike, *dead ringer, *spitting image, clone, counterpart, match, mate, stand-in.

II

a.

paired, twin, two-sided, dual, twofold, binary, duplex, duple.

ANT.: single, lone, only

IV

(Roget's Thesaurus II) I adjective 1. Twice as much or as large: twofold. See BIG. 2. Consisting of two identical or similar related things, parts, or elements: dual, paired, twin. See SAME. 3. Composed of two parts or things: biform, binary, dual, duple, duplex, duplicate, geminate, twofold. See PART. 4. Being or acting so as to conceal one's real intentions: double-dealing, double-faced, two-faced. See HONEST. II noun 1. One exactly resembling another: duplicate, image, picture, portrait, spitting image. Slang: ringer. See SAME. 2. One of a matched pair of things: companion, counterpart, duplicate, fellow, match, mate, twin. See SAME. III verb 1. To make or become twice as great: duplicate, geminate, redouble, twin. See BIG, INCREASE. 2. To bend together or make a crease in so that one part lies over another: crease, fold, pleat, ply1, ruck2. See ORDER, SMOOTH. 3. To turn sharply around. Also used with back: about-face, reverse. See APPROACH.