WordNet (r) 3.0 (2006):

fling off
    v 1: write quickly; "She dashed off a note to her husband saying
         she would not be home for supper"; "He scratched off a
         thank-you note to the hostess" [syn: dash off, scratch
         off, knock off, toss off, fling off]

Moby Thesaurus II by Grady Ward, 1.0:

55 Moby Thesaurus words for "fling off":
   articulate, breathe, cast off, chime, chorus, come out with,
   communicate, convey, deliver, disclose, dispel, do away with,
   eliminate, emit, enunciate, express, exterminate, fling out,
   flounce out, formulate, get rid of, give, give expression,
   give out with, give tongue, give utterance, give voice, impart,
   let out, lip, liquidate, out with, phonate, phrase, pour forth,
   present, pronounce, purge, put forth, put in words, raise, say,
   set forth, shake off, shoo, sound, tell, throw away, throw off,
   utter, verbalize, vocalize, voice, whisper, word