Prefixes
Hyper-
excessive, above
Dia-
through, across
Eu-
healthy, normal
Contra-
against
Hemi-
half
Intra-
within, below
Dys-
abnormal, painful, difficult
Auto-
self
Epi-
upon, over, at
De-
loss, removal of
Circum-
around
In-
not
Brady-
slow
Ex-
out, away from
Bi-, Bin
two, twice, double
End-, Endo
within, inside
Ad-
toward
Dis-
opposite of, not having
Ante-
before, in front of
In-
inward, inside
Ecto-, Exo-, Extra
outside, beyond
A-, An
not, without
Hypo-
insufficient, below
Intra-
within, below
Ab-
from, away