Related Clues:

• Pitched highly in the yard, ever rising
• Some of the three dynamos are shrill
• Thin and frail
• Politician's divided influence, referring to first answer?
• (Of sound) high and thin
• Like many marsh plants
• Bassoonlike in sound
• High and thin, as a voice
• Prepare to change one of the vitamins, being tall and thin
• Like Bunter losing head, becoming weak and thin?
• Tall, gangly male avoids medicine perhaps
• Very wet politician with external influence
• (Of voice) high and thin
• Like mucky swampland
• Thin solution, less mass