modus operandi

noun

mo·​dus ope·​ran·​di ˌmō-dəs-ˌä-pə-ˈran-dē How to pronounce modus operandi (audio)
-ˌdī
plural modi operandi ˈmō-ˌdē- How to pronounce modus operandi (audio)
ˈmō-ˌdī-
: a method of procedure
the best approach … was to do things through quiet persuasion, which was his modus operandiJames Traub
especially : a distinct pattern or method of operation that indicates or suggests the work of a single criminal in more than one crime
got her picture identified, discovered her modus operandi, and put a stakeout on her neighborhood Time

Examples of modus operandi in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Scattered Spider’s modus operandi has been to swoop into a sector and select multiple targets before moving on. Suzanne Rowan Kelleher, Forbes.com, 2 July 2025 Until around two weeks ago, Israel’s modus operandi was to assert military dominance as a political strategy, according to Michael Oren, who served as the country’s ambassador to the U.S. from 2009 to 2013. Matt Bradley, NBC news, 30 June 2025 The practice involves individuals testing and probing artificial intelligence systems to uncover and identify any potential harm — a modus operandi common in cybersecurity circles. Neha Hegde, CNBC, 22 June 2025 Instead, rapprochement with Iran has been the modus operandi in recent years, with Gulf countries normalizing and easing tensions with the Islamic Republic under the calculation that regional stability would bring regional prosperity. Nabih Bulos, Los Angeles Times, 20 June 2025 See All Example Sentences for modus operandi

Word History

Etymology

New Latin

First Known Use

1654, in the meaning defined above

Time Traveler
The first known use of modus operandi was in 1654

Browse Nearby Words

Cite this Entry

“Modus operandi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/modus%20operandi. Accessed 18 Jul. 2025.

Legal Definition

modus operandi

noun
mo·​dus ope·​ran·​di ˌmō-dəs-ˌä-pə-ˈran-dē, -ˌdī How to pronounce modus operandi (audio)
: a distinct pattern or method of operation especially that indicates or suggests the work of a single criminal in more than one crime
Etymology

New Latin, manner of operating

More from Merriam-Webster on modus operandi

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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