n. 25B6; noun a teenage runaway : FUGITIVE, escaper, escapee; refugee; truant; absconder, deserter.
25B6; adjective
a runaway horse : OUT OF CONTROL, escaped, loose, on the loose.
a runaway victory : EASY, effortless; informal as easy as pie.
runaway inflation : RAMPANT, out of control, unchecked, unbridled.