| Answer | Crossword Clue |
|---|---|
| ART | Something famously impossible to define |
| intangible | Difficult or impossible to define or understand; vague and abstract |
| sensing | Be aware that something is the case without being able to define exactly how one knows |
| definientia | A word, phrase, or symbolic expression used to define something, esp. in a dictionary entry, or introducing a word or symbol into a logical system by providing a statement of its meaning |
| defy | challenge to do something considered impossible dare |
| mysteries | Something that is difficult or impossible to understand or explain |
