Synonyms for Fling (same or very similar meaning)
WordNet sense 1 (indulge oneself):
splurgeWordNet sense 2 (throw or cast away):
discard, dispose, toss, discard, put away, cast aside, toss away, toss out, cast out, chuck out, throw outWordNet sense 3 (a usually brief attempt):
crack, go, offer, pass, whirlWordNet sense 4 (a brief indulgence of your impulses):
spreeFrom the ODE community, based on WordNetadd/edit