| A | B |
| hypoallergenic | less likely to cause allergies |
| hypocrisy | the practice of being less than genuine |
| hypodermic | under the skin |
| hypogeal | located below the surface of the ground |
| hypoglossal | under the tongue |
| hypoglycemia | an abnormally low level of sugar in the blood |
| hypotension | having blood pressure below what is normal |
| hypothermia | a temperature below the normal body temperature |
| hypothesis | an idea that is under investigation |
| hypothyroidism | a disorder caused by a thyroid gland that is slower and less productive than normal |
| hyperactive | overly active |
| hyperbole | extreme exaggeration |
| hypercritical | harsh in judgment |
| hyperextend | to injure a body part by bending it beyond how far it should normally bend |
| hyperglycemia | abnormally high blood sugar levels |
| hypersensitive | sensitivity beyond what is normal |
| hypertension | abnormally high blood pressure |
| hyperthermia | very high fever |
| hyperthyroidism | a disorder caused by a thyroid glad that is faster than normal and overly productive |
| hyperventilate | to breathe rapidly and deeply |