without pity; in a merciless manner;
"he was mercilessly trounced by his opponent in the House"
- The sun is roasting us mercilessly.
- The victors mercilessly carved up the defeated country, each taking an equal share.
- It went on a rampage and mercilessly drilled another robot.
- Thousands of Chinese civilians were mercilessly tortured and murdered.
- merciless 无慈悲心的