this means war

idiom

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!

Dictionary Entries Near this means war

Cite this Entry

“This means war.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/this%20means%20war. Accessed 5 Feb. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!


Words Named After People

  • name tags
  • Namesake of the leotard, Jules Léotard had what profession?
Name That Thing

You know what it looks like… but what is it called?

TAKE THE QUIZ
Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?

PLAY