Related Clues:

• The height of the twisted tail of the duet
• High position is titled - au contraire
• Dilute at 13's level of verticality
• Groan endlessly in Suffolk river - it's related to sea level
• Aviation concern
• Russell admits large bird is longitudinally at the centre way above sea level
• Poet's left out last part about bird on lake in a high place
• Height reached by bird replacing one left in advert
• Height (above ground)
• Loftiness of US city overthrown at start of play
• Duke with a posh title abused high position
• See 1 Down
• Having a strange tilt, perhaps due to the height
• That'll tell us what you've been getting up to!
• Height, elevation