furtive (adjective) furtive: sneaky, secretive
Sinonime: apace, briskly, chop-chop, expeditiously, flat-out, fleetly, full tilt, hastily, hurriedly,
immediately, in a flash, in haste, in nothing flat, in short order, instantaneously,
instantly, lickety-split, like a bat out of hell, like a flash, like a shot, promptly, pronto, quick, rapidly, speedily, swift, swiftly
Antonime: aboveboard,
forthright,
honest,
open,
truthful