A/an
Without
Ante
Before
Anti
Opposed to
Dys
Combining form
Echo
External
Endo
Internal
Hemi
Circle
Haem
And iron containing substance
Hyper
Increased
Hypo
Decreased
Poly
Many
Pyo
Pus, infection
Infra
On the inside
Neo
New
Peri
About or around
Poly
Many
Pre
Before
Pseudo
Not genuine
Retro
Backwards
Semi
Half
Sub
Below
Super
To be placed above
Supra
Beyond limits
Trans
Changing throughly