main - mate
- master
- master and servant
- master at common law
- master builder
- master chief petty officer
- master in chancery
- Master of Arts
- master of ship
- master of the crown office
- master of the rolls
- master of vessel
- master plumber
- master pro hac vice
- master sergeant
- master's mate
- masthead
- mastiff
- masturbation
- mat
- match