dys-: painful, abnormal, difficult, labored

endo-: within, in

hemi-: half

hyper-: excessive or above normal

hypo-: below normal or deficient 

mal-: bad or poor 

para-: beside, near, or abnormal

peri-: around or surrounding

sub-: under, below

trans-: across or through

An-/A: without, lack of

dia-: through, complete

poly-:many, excessive

noct-: night

oligo-: few or scanty