anti- and ante-

anti- means against or opposite:

antibiotic
antibody
antiwar

ante- means before:

antecedent
antenatal
antebellum

hyper- and hypo-

hyper- means over or above:

hyperactive
hypersensitive
hyperbole
hypermarket

hypo- means under or below:

hypodermic
hypothermia
hypocentre GB or hypocenter US

inter- and intra-

inter- means between or together:

international
interactive
interlibrary loan
internet

intra- means inside:

intravenous
intramural
intranet