Definition of modus operandi; M.O.
- a usual method of working or operating
Usage examples of modus operandi; M.O.
The burglar’s modus operandi was to break a back window, disable the alarm, and leave within three minutes.
Her M.O. as a manager was simple: set clear goals, check progress weekly, and remove obstacles quickly.
Detectives linked the crimes because the same modus operandi appeared in each one.