| Word | Definitions | Synonyms |
|---|---|---|
| phreatic | (adjective) of or relating to ground water | - |
| phrenetic | (adjective) excessively agitated; distraught with fear or other violent emotion | Synonyms: frantic, frenetic, frenzied |
| phrenic | (adjective) of or relating to the diaphragm | - |
| phrenological | (adjective) of or relating to phrenology | - |