Mal
Bad
Malicious, malignant
Man/manu
Hand
Manual, manoeuvre, manufacturing
Mar/mer
Sea
Marine, mermaid
Matr
Mother
Matron, matriarch
Met/meter
Measure
Metric, thermometer
Meta
More, beyond
Metaphysics , metaphor
Mic/micro
Tiny
Microscope, microchip
Mill
Thousand
Millimetres, millennium
Mis
Wrong, bad
Mistake, misfortune
Mit
Send
Transmit, emit
Mob/mobi
Moving
Mobilise
Mor/mort
Death
Immortal, mortify
Morph
Change(shape)
Amorphous, morphology
Mut
Change, alter
Mutate, transmute
Nat/natu
Natural, birth
Natural, natal