an-
Not
anti-
Against
contra-
Against
de-
Down, away
ante-
Before
pre-
Before
pro-
Before
brady-
Slow
tachy-
Fast
post-
After
re-
Again
ab-
Away
bi-
Two
hemi-
Half
hyper-
Over
hypo-
Under
ad-
Toward
circum-
Around
peri-
Around
Dia-
Through
e-
Out
ec-
Out
ex-
Out
ecto-
Outside