1. Without pity; in a merciless manner
   - mercilessly, pitilessly, unmercifully

See also: remorseless

• gas pedal
• gas phlegmon
• gas plant
• gas pressure
• gas pump
• gas range
• gas ring
• gas service
• gas shell
• gas station
• gas stove
• gas system
• gas tank
• gas thermometer
• gas turbine
• gas up
• gas well
• gas-cooled reactor
• gas-discharge lamp
• gas-discharge tube
• gas-filled
• gas-tight
• gas-turbine ship
• gasbag
• Gascogne