Middle Management
Milestone
Mindshare
Minimum Viable Product (MVP)
Min Maxing
Miscommunication
Missed The Boat
Mission-critical
Mission Critical
MNC
Moat
Mobile-first
MOFU
MoM
Monday Morning Quarterback
Monetization
Money Left On The Table
Monkey In The Middle
Monkey Patch
Moonlighting
Moonshot
Moore's Law
Moved The Needle
Moving Forward
Moving Goal Posts