| UNFATHOMABLE | Incapable of being fully understood |
| BUSINESS | A group of ferrets; or, from the Old English for "anxiety", a word whose early sense was used to mean a state of being fully occupied, later commerce, industry or trade (8) |
| SATIETY | State of being fully fed (7) |
| READINESS | State of being fully prepared |
| TUNEFUL | Neptune fully understood part of musical |
| SINKIN | (Of words) become fully understood |
| NULLIFY | Make nothing of it being fully in order (7) |
| SANKIN | Dawned, became fully understood (4,2) |
| TRUTHFUL | Honest in part, Ruth fully understood the contents |
| CLEAR | Fully understood to be like crystal (5) |
| ALLCLEAR | Safe signal fully understood |
| ASSIMILATED | Varied details and aims fully understood (11) |
| MATURE | Rue being left on the floor despite being fully developed? (6) |
| IMAGO | Your setter's past being fully adult! |
| SATED | Settled out East, being fully indulged |
| REALISING | 'Real!' I croon, being fully cognisant (9) |
| WIDEAWAKE | Being fully conscious (4,5) |
| FILLED | Stopped being fully occupied (6) |
| INDEEP | Repainted rejected art, surprisingly, being fully committed |
| NOUMENON | In the philosophy of Kant, a thing that is incapable of being known, but only inferred from the nature of experience |
