| Clue | Source | Date |
|---|---|---|
| Branch of philosophy dealing with conceptions of reality (8) | ||
| Science set down in working model | ||
| The branch of metaphysics that deals with the nature of existence | Irish Times Simplex | 07 Mar 2022 |
| Branch of metaphysics that deals with the nature of existence | Irish Times Simplex | 26 Jul 2017 |
| Metaphysics subject | ||
| Study of being | ||
| The science of reality. |