mushroom into (something)

mushroom into (something)

To increase, expand, or grow into something much larger in size, scope, or scale than something was initially, especially in a short space of time. We started out as a small mom-and-pop shop, but the business mushroomed into a huge nationwide chain in just a few years! What was a minor talking point during the beginning of his campaign has mushroomed into one of the key issues of this election.
See also: mushroom

mushroom into something

Fig. to grow suddenly into something large or important. The question of pay suddenly mushroomed into a major matter. The unpaid bill mushroomed into a nasty argument and, finally, a court battle.
See also: mushroom