runaway

n.

  1. One who, or that which, flees from danger, duty, restraint, etc.; a fugitive.
  2. The act of running away, esp. of a horse or teams; as, there was a runaway yesterday.

a.

  1. Running away; fleeing from danger, duty, restraint, etc.; as, runaway soldiers; a runaway horse.
  2. Accomplished by running away or elopement, or during flight; as, a runaway marriage.
  3. Won by a long lead; as, a runaway victory.
  4. Very successful; accomplishing success quickly; as, a runaway bestseller.