1. 
[syn: scat, run, scarper, turn tail, lam, run away, hightail it, bunk, head for the hills, take to the woods, escape, fly the coop, break away]
WordNet (r) 3.0 (2006):
fly the coop
    v 1: flee; take to one's heels; cut and run; "If you see this
         man, run!"; "The burglars escaped before the police showed
         up" [syn: scat, run, scarper, turn tail, lam,
         run away, hightail it, bunk, head for the hills,
         take to the woods, escape, fly the coop, break
         away]
Moby Thesaurus II by Grady Ward, 1.0:
18 Moby Thesaurus words for "fly the coop":
   bail out, break away, break jail, break loose, cut loose, escape,
   escape prison, evade, flee, get away, get clear of, get free,
   get out, get out of, jump, make a getaway, skip, slip the collar