snowballing

plural snowballings

1. countableuncountableThe act or practice of making and throwing snowballs.
2. countablefigurativelyuncountableA situation which rapidly gets out of control.

1. gerundparticiplepresentpresent participle and gerund of snowball

   1 more example

   "Operating the WCML at this intensity makes it challenging to maintain acceptable performance levels, resulting in a frustratingly unreliable service for passengers. Minor disruption can escalate into significant delays because a train running only a few minutes late can miss its slot across a junction, resulting in a snowballing effect across the network."

   2020 May 6, Philip Haigh, “Just one more stop on the long journey to HS2 fulfillment [sic]”, in RAIL, page 65