KEY: Concave.
SYN: Hollow, scooped, pitted, excavated, retreating, alveolar.
ANT: Convex, tumular, protuberant, relievant, embossed, intumescent.

• Moody
• Moot
• Moral
• Morals
• Morass, [See MARSH]
• Morbid
• Mordent
• Moreover
• Morose
• Morsel, [See BIT]
• Mortal
• Mortify
• Mostly
• Motherly
• Motionless, [See STILL]
• Motion, [See MOVEMENT]
• Motive
• Motley
• Mount, [See ASCEND]
• Mournful
• Movable, [See STATIONARY]
• Move
• Movement
• {[Mrink]?}
• {[Mtwrule]?}, [See RULE]