Related Clues:

• Rocky Mountain feeling?
• Euphoric
• Mighty partner
• With 38-Across, subject of this puzzle
• Great feeling
• Elevated
• Trading day peak
• In the clouds
• Too high
• Overpriced, e.g.
• Like a Rolls-Royce
• Up state
• Elated state
• A bit tipsy
• Quite expensive (Var.)