this means war
Definition of this means war
—used to show that one is offended by what someone has said or done and wants to start a fight with that person He insulted my girlfriend, and as far as I'm concerned, this means war. ; sometimes used humorously Make fun of my car, will you? This means war!
Word by Word Definitions
: a state of usually open and declared armed hostile conflict between states or nations
: a period of such armed conflict
: state of war
: to be in active or vigorous conflict
: to engage in warfare
: worst, overcome
Seen and Heard
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