| merciless(adjective, mean, cruel, pitiless, heartless) |
| mortal(adjective, mean, severe, harsh, cruel) |
| pitiless(adjective, mean, severe, harsh, cruel) |
| relentless(adjective, mean, severe, harsh, cruel) |
| ruthless(adjective, mean, severe, harsh, cruel) |
| severe(adjective, mean, harsh, cruel, pitiless) |
| unappeasable(adjective, mean, severe, harsh, cruel) |
| uncalled-for(adjective, mean, severe, harsh, cruel) |
| unflinching(adjective, mean, severe, harsh, cruel) |
| unforgiving(adjective, mean, severe, harsh, cruel) |
| unmerciful(adjective, mean, severe, harsh, cruel) |
| unpitying(adjective, mean, severe, harsh, cruel) |
| unrelenting(adjective, mean, severe, harsh, cruel) |
| unsparing(adjective, mean, severe, harsh, cruel) |
| unsympathetic(adjective, mean, severe, harsh, cruel) |
| unyielding(adjective, mean, severe, harsh, cruel) |
| wanton(adjective, mean, severe, harsh, cruel) |
| compassionless(adjective, mean, severe, harsh, cruel) |
| dog eat dog(expression, adjective, idiom, mean, severe) |
| ironfisted(adjective, unsparing, inhumane) |