a-, an-
no, not
aut-
self
dia-
complete, through
dys-
bad, painful, difficult, abnormal
endo-
within
exo-
outside
hyper-
excessive, more than normal, too much
hypo-
below, less than normal, under
peri-
surrounding
pro-
before, forward
re-
back
retro-
behind
sub-
below, under
trans-
across, through