Related Clues:

• Tighten (up)
• In need of a massage, maybe
• General in charge of utilities?
• Type of shock
• Linguist's subject
• In need of a rubdown
• Cliff-hanging
• Not loosey-goosey
• Gas partner
• Like Lionel trains
• Needing a massage, say
• Kind of current
• Past condition?
• Past, present or future
• Nail-biting