Related Clues:

• Like guitar strings, often
• Tightly-strung
• Feeling jittery
• Like many a thriller
• In a knot
• On edge in a manner of speaking
• Perfect, e.g
• Tight in a manner of speaking
• Charged for contract
• Youngsters taking Ecstasy finally show strain
• Verbally instructed and no slackness evident here
• Nervous, though it's quite possibly perfect
• On edge in the past, perhaps
• It could be the perfect figure, but she's heartless
• Uneasy with number coming to most crowded area of Britain