peri
meaning: around, about
ex: periscope, perimeter
philo
meaning: love
ex: philosophy, philharmonic, philanthropy
contra (counter)
meaning: against
ex: contradicting, counterproductive
bi
meaning: having two
ex: bilingual, bifurcated
cosmo
meaning: universe
ex: cosmos, cosmopolitan
inter
meaning: between
ex: interstate, interview
mono
meaning: one, alone
ex: monogamous, monopoly, monologue
anti
meaning: against, opposite
ex: antifreeze, antidote
in (im, il, ir)
meaning: in, not
ex: independant, impossible, illogical, irrelevant
co (col, con, com)
meaning: with, together
ex: contact, compatriot, collate