| OCCULTISM | Doctrine or study of things hidden or mysterious (9) |
| GENETICS | Study of things naturally passed to one? (8) |
| OROGRAPHY | Science or study of mountains (9) |
| NIGHTTIME | Part of a planet or a moon facing away from the Sun, thus in darkness; or, by extension, the dark, gloomy or mysterious aspect of anything (9) |
| SEMIOLOGY | The science or study of signs |
| ESOTERICA | Secret or mysterious objects or writings (9) |
| DISMISSAL | Is the Church book of prayers following a top doctrine or a written order of discharge (9) |
| AMETHYSTS | Precious things hidden in that messy confusion? (9) |
| DEBUGGING | Correcting, in a way ... or what would need to be done to remove the things hidden in the answers to |
| APOCRYPHA | A Post Office vault briefly held endless rarely encountered, hidden or secret things (9) |
| RECONDITE | Something that is hidden or obscure (9) |
| INCOGNITO | With identity hidden or obscured (9) |
| POTENTIAL | It might be hidden or squandered |
| ASCERTAIN | Establish after an investigation or study (9) |
| HARMONY | A combination of simultaneously sounded musical notes producing an aesthetically agreeable sound; the art, science or study of chords; or, a collation of parallel narratives (7) |
| NUMISMATICS | Collection or study of currency such as coins, medals or banknotes (11) |
| SELENOGRAPHY | Mapping of the moon or study of its features |
| PHARMACOLOGY | The science or study of drugs |
| MOUNTS | In the hobby or study of philately, another name for stamp hinges (6) |
| OOLOGY | The science or study of birds' eggs (6) |
