Related Clues:

• 'Immediately,' in the O.R.
• Quickly, in the I.C.U.
• 'Yesterday!'
• Career HRs, e.g.
• Not leave
• Admonition to Spot
• Reside
• Don't take off
• Instruction to a boxer
• "On the double!"
• "At once!"
• ASAP to an EMT
• Legal delay
• Rex's admonition
• Shirt collar stiffener