This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Widespread destruction; devastation.

n. Disorder or chaos: a wild party that created havoc in the house.

v. To destroy or pillage.

n. devastation, destruction

n. mayhem

v. To pillage.

v. To cause havoc.

interjection. A cry in war as the signal for indiscriminate slaughter.

n. Wide and general destruction; devastation; waste.

v. To devastate; to destroy; to lay waste.

interjection. A cry in war as the signal for indiscriminate slaughter.

n. An early Middle English form of hawk, surviving till later times in the phrase to cry havoc.

n. General and relentless destruction.

n. To shout for the beginning or the continuation of a work of indiscriminate destruction or rapine.

To work general destruction upon; devastate; destroy; lay waste.

n. violent and needless disturbance

"Props 1A-1F must be defeated, because they would wreak long-term havoc on the state."

havocked    havocking    havocs   

disturbance   

havock   

wreak havoc    cry havoc    raise havoc    play havoc    break havoc   

devastation    waste    devastate    destroy   

devastation    carnage    bloodshed    slaughter    catastrophe    desolation    commotion    turmoil    ravage    conflagration