Related Clues:

• That's it for the tune with 'er
• Is there e'er a nut for it?
• That's it! Sounds amphibious
• Retune this? That's it
• 'Make this invalid, ate it at last (6)'
• That's it - more like something in water
• Grammatical gender
• Render unproductive?
• Agent upset over point in dispute
• Deny development from age 10
• Disgust makes sodium turn to salt
• Non-21 description of Livingstone, say?
• Nullify agent turning back on mole
• Agent gets upset over point in veto
• Turn on its head