"runaway" in the noun sense
1. runaway, blowout, romp, laugher, shoo-in, walkaway
an easy victory
2. fugitive, runaway, fleer
someone who flees from an uncongenial situation
"fugitives from the sweatshops"
"runaway" in the adjective sense
1. runaway
completely out of control
"runaway inflation"
Source: WordNet® (An amazing lexical database of English)
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