havoc
hav|oc /h'ævək/
1 [N-UNCOUNT]
Havoc is great disorder, and confusion.
Rioters caused havoc in the centre of the town.
2 [PHRASE] V inflects, PHR n
If one thing plays havoc with another or wreaks havoc on it, it prevents it from continuing or functioning as normal, or damages it.
The weather played havoc with airline schedules...
1 [N-UNCOUNT]
Havoc is great disorder, and confusion.
Rioters caused havoc in the centre of the town.
2 [PHRASE] V inflects, PHR n
If one thing plays havoc with another or wreaks havoc on it, it prevents it from continuing or functioning as normal, or damages it.
The weather played havoc with airline schedules...