- Craniums
- Intellect
- Intelligence (colloq)
- Poirot's grey cells
- Common sense
- Common sense is most ominous!
- Commonsense
- Commonsense coll
- Gumption
- Intellect
- Intellect (coll)
- ... your own business!
- Brains
- Care for imagination or intellect
- Don’t worry, never ...
- Imagination
- Intellect
- Look after