Modus operandi is a Latin phrase meaning 'mode of operating' or 'METHOD of working'. It is commonly used to refer to someone's habits or STYLE of doing something, especially when it is seen as suspicious or criminal. The crossword solutions for the term modus operandi are METHOD (6 letters), SYSTEM (6 letters), how (3 letters), MO (2 letters), WAY (3 letters), STYLE (5 letters), PROCESS (7 letters), and TECHNIQUE (9 letters). These words all refer to different ways of doing something, and can be used to describe the modus operandi of an individual or group.