It comes before the base word.
prefix
It comes after the base word.
suffix
to order before
preorder
to heat before
preheat
did not read right
misread
did not hear right
misheard
not real
unreal
build again
rebuild
opposite of loaded
unloaded
opposite of tied
untied
make again
remake
most smart
smartest
more warm
warmer
most loud
loudest
most shallow
shallowest
