| A | B |
|---|
| Hyperacidity | excessive acidity, especially in the stomach |
| Hyperactive | excessively active |
| Hypercritical | excessively fault-finding; captious |
| Hypersensitive | abnormal sensitive |
| Hypertension | abnormally high blood pressure |
| Hypodermic | small syringe with a hollow needle for making injections beneath the skin |
| Hypoglycemic | afflicted with hypoglycemia (an abnormally low concentration of sugar in the blood) |
| Hyposensitize | make less sensitive |
| Hypothermia | subnormally body temperature |
| Hypotension | abnormally low blood pressure |
| Subaqueous | underwater |
| Subcutaneous | being, living, or introduced beneatht the skin |
| Sublethal | not quite lethal; insufficient to cause death |
| Submarginal | below minimum standards; inadequate for some end; unproductive |
| Subservient | useful in an “under,” or subordinate, capacity; excessively submissive |
| Supererogatory | beyone the requirements od duty; perform to an extent not demanded |
| Superficial | over or on the surface only; not profound or thorough |
| Supernatural | beyond what is natural or observable; not explainable by the laws of nature |
| Supernumerary | exceeding the standard or prescribed number; extra |
| Supersonic | having a speed beyond that of sound |
