Synonyms for Chop-chop:

• adj.

  •fast (adjective)
  • post-haste,
  • quick,
  • presto,
  • Lickety Split,
  • Posthaste,
  • pronto.

• adv.

  •all (adverb)
  • apace,
  • rapidly,
  • quickly.
  •fast (adverb)
  • promptly,
  • like greased lightning,
  • swiftly.

• Other synonyms:

  •Other relevant words:
  • instantly,
  • at once,
  • right away,
  • immediately,
  • directly,
  • at full tilt,
  • p.d.q.,
  • hell-for-leather,
  • in a wink,
  • without delay,
  • in a trice,
  • double-quick,
  • straightaway,
  • cursorily.

Antonyms for Chop-chop:

• adj.

  • fast
    loose, movable, flexible, impermanent, dull, sluggish, tardy, good, boring, insecure, upright, clumsy, unhurried, unfixed, plodding, slow, moral, unattached.
  • hasty
    cautious, delayed, kind, lingering, lazy, wise, thoughtful, leisurely, careful, Loitering.

• adv.

  • all
    slowly.
  • fast
    unfixedly, loosely.
  • quickly
    later, eventually.
  • Other antonyms:
    lingeringly, easy, laggardly, tardily, ploddingly, sluggishly, deliberately, belatedly.