a-
an-
(Before vowel or h)
Not,
Without,
Lacking,
Deficient
anti-
ant-
(Before vowel or h)
Against,
Opposed to,
Preventing,
Relieving
dys-
Bad, Difficult, Painful, Defective, Abnormal
Hyper-
Over,
Above,
Excessive,
Beyond normal
• hypertension
Hypo-
Less than,
Below,
Under normal,
Deficient
Para-
Often par- before a vowel
Beside, Beyond, Near, Abnormal, Irregular, Alongside