Possible Clues:

• Widen like eye pupils
• Widen, spread out
• Enlarge - detail (anag)
• What pupils do in the dark
• Make more open
• One delayed support for Germany to expand
• Stretch from detective's overdue
• I would turn, get blown up, and be dead
• Enlarge head of deltoid by endless exercise system
• Speak or write at length - widen