knock-on effect
nounUK /ˌnɒk ɒn ɪˈfekt/
US /ˌnɑːk ɑːn ɪˈfekt/
A knock-on effect is when one thing makes another thing happen.
The rain caused a knock-on effect, so the game was canceled and everyone went home.
OTHER MEANINGS
2. An indirect result that happens later because of an earlier event.
The factory closed, and the knock-on effect was that many shops lost customers.
3. A series of events where each one causes the next.
One late bus had a knock-on effect on the whole morning schedule.
4. An unexpected change that spreads from one situation to another.
The new road had a knock-on effect on traffic in nearby streets.