runaway success

Unexpected massive triumph

A runaway success is an achievement that exceeds all expectations, gaining momentum rapidly and seemingly unstoppably—like a runaway train or horse that can't be reined in.

The phrase typically describes books, films, products, or ventures that take off far beyond what anyone anticipated: The app became a runaway success within weeks of launch.

Related

viral · word of mouth · sensation · catch fire · breakthrough · out of nowhere · triumph · jackpot · goldmine · meteoric · overnight · lightning in a bottle · taking off · wildfire · explosive · chart-topping · bestseller · juggernaut

Categories
Opposites
outcome magnitude

runaway successtotal disaster

colossal failure · train wreck · fiasco · epic fail · debacle

reception/performance scale

runaway successbox office bomb

Film losing significant money

bomb · flop · turkey · stinker · lemon

reception and impact

runaway successflop

Complete commercial failure

box office bomb · turkey · stinker · dead in the water · tanked

Family

away, success, runs, runner, runners, runways, successful, successfully, unsuccessful

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Positive · Everyday, not technical · Rated G