Related Clues:

• Brace, in a way
• Present, e.g.
• Bit of aid
• It can be past or present
• On tenterhooks
• It has 27 bones
• Drawn tight
• All wound up
• Ex-lax?
• Tightly stretched
• Grammarian's concern
• Stiffen
• Not cool at all
• English class topic
• Emotionally charged