Related Clues:

• Ventilate
• Lighten up?
• Crank
• Give the gas
• Increase, with 'up'
• Freshen
• Race
• Make bubbly
• Power (up)
• White-collar worker, for short?
• Gun an engine
• --- up (accelerate)
• Put fizz in
• Accelerate sharply
• Make go 'vroom'