Related Clues:
- Backed up by facts
- Good, as an objection
- V&A top? That's reasonable!
- Not expired, as a license
- Points board accepts as defensible
- Sound or credible
- Resistant to attack
- Can be maintained
- Not yet expired, say
- Not ridiculous, as an argument
- All but one in football team fit and sound?
- Some primeval idea having legal authority
- Volume dial tweaked sound
- Logically acceptable
- Credible points board accepts