Synonyms for Tout de suite:

• adv.

  •forthwith (adverb)
  • directly,
  • quickly,
  • straightaway,
  • away,
  • suddenly,
  • abruptly.
  •immediately (adverb)
  • soon,
  • shortly,
  • promptly,
  • thereupon,
  • on the double,
  • instantaneously,
  • summarily,
  • in a flash,
  • rapidly,
  • straight off,
  • PDQ,
  • in a new york minute,
  • ANON.

• Other synonyms:

  •a. & adv.
  • now,
  • pronto,
  • right away,
  • in an instant,
  • in a wink.
  •adv
  • at once,
  • forthwith,
  • hereupon,
  • immediately,
  • instantly,
  • on the dot,
  • unhesitatingly,
  • Instanter,
  • straight away,
  • right now,
  • at short notice,
  • in a jiffy,
  • now or never,
  • double-time,
  • like now,
  • on the spot,
  • there and then,
  • this minute,
  • without hesitation.
  •adv.
  • soonest,
  • spontaneously,
  • urgently,
  • without delay,
  • this instant,
  • in nothing flat,
  • on a dime,
  • soon afterward,
  • tout de suite.