- adj1. equal, equaled, matched, correspondent, comparable; equivalent, commensurate, again as much.2. duplicate, twin, identical; paired, in pairs, coupled, mated, geminate; dual, duplex; twofold, binal, binate, replicate.3. folded, bent over, doubled; bifold, biform, bi-formed, two-ply.4. deceitful, insincere, two-faced, Janus-faced, hypocritical; double-dealing, false, dishonest, equivocal, guileful, knavish.adv5. twice, by twos, two-by-two, doubly, encore, bis.n6. duplicate, twin, copy, replica, clone, facsimile, look-alike; counterpart, match, equal.7. substitute, Inf. sub, proxy, alternate, fill-in, secondary, locum tenens; stand-in, understudy, Inf. pinch hitter, stunt person.8. on the doublequickly, losing no time, with haste, posthaste; briskly, at full speed, in double-quick time, at full gallop, tantivy; without delay, straightway.v9. multiply or increase by two; enlarge, magnify; duplicate, copy, geminate; match, mate, pair, couple, associate.10. fold, turn, turn back, turn again, redouble, make two thicknesses, plait.11. double back, go back, go round, sail round, backtrack, return; elude, evade.
A Note on the Style of the synonym finder. 2014.