HAVOC
havoc, mayhem
(noun) violent and needless disturbance
Source: WordNet® 3.1
Etymology
Noun
havoc (usually uncountable, plural havocs)
widespread devastation, destruction
mayhem
Usage notes
The noun havoc is most often used in the set phrase wreak havoc.
Verb
havoc (third-person singular simple present havocs, present participle havocking, simple past and past participle havocked)
To pillage.
To cause havoc.
Usage notes
As with other verbs ending in vowel + -c, the gerund-participle is sometimes spelled havocing, and the preterite and past participle is sometimes spelled havoced; for citations using these spellings, see their respective entries. However, the spellings havocking and havocked are far more common. Compare panic, picnic.
Interjection
havoc
A cry in war as the signal for indiscriminate slaughter.
Source: Wiktionary
Hav"oc, n. Etym: [W. hafog devastation, havoc; or, if this be itself
fr. E. havoc, cf. OE. havot, or AS. hafoc hawk, which is a cruel or
rapacious bird, or F. hai, voux! a cry to hounds.]
Definition: Wide and general destruction; devastation; waste.
As for Saul, he made havoc of the church. Acts viii. 3.
Ye gods, what havoc does ambition make Among your works! Addison.
Hav"oc, v. t.
Definition: To devastate; to destroy; to lay waste.
To waste and havoc yonder world. Milton.
Hav"oc, interj. Etym: [See Havoc, n.]
Definition: A cry in war as the signal for indiscriminate slaughter. Toone.
Do not cry havoc, where you should but hunt With modest warrant.
Shak.
Cry 'havoc,' and let slip the dogs of war! Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition