a, an-
not, without opposite to: ex Antonym
ab-
from: ex absent
ad-
To, toward: advance
ante-
before: ex antebellum
anti-
against. opposite: ex antibacterial
auto-
self: ex automobile
bi-
two: ex bicentennial
circum-
around: circumference
de-
away from: ex depart
dia-
through, across: ex diagonal
dis-
not: ex disrespect
en-
put in, into: ex enter
ex-
out of, former: ex exit
extra-
outside of, beyond: ex extraordinary
hyper-
over, more: ex hyperactive
il-, ir
not, without: ex irritate
in-, im-
into, not: ex insert, impossible
inter-
between: ex interactive
intra-
within: ex intrastate