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