Related Clues:
- Solemnly serious
- Not a candidate for the invoking of the 25th Amendment, say
- Not at all ludicrous
- In possession of one's marbles?
- Marked by aplomb
- Not cuckoo
- Having a 0 percent BAC
- All together, so to speak
- Having a sound mind
- 100 percent, mentally
- Playing with a full deck?
- With a sound mind
- What all drivers should be
- Not mad?
- Of sound mind on Parisian river, it's said