| malevolent(adjective, mean, evil, nasty, harsh) |
| mandatory(adjective, obvious, required, inevitable, inescapable) |
| mortal(adjective, mean, severe, harsh, cruel) |
| narrow-minded(adjective, persistent, obstinate, insistent, dogged) |
| opinionated(adjective, tough, firm, determined, resolute) |
| oppressive(adjective, severe, harsh, cruel, serious) |
| painstaking |
| peremptory(resolution, severity, compulsion) |
| pig-headed(adjective, determined, resolute, obstinate, uncompromising) |
| positive(severity, uncompromising) |
| predestined(adjective, near, doomed, coming, intended) |
| predetermined(adjective, bound, coming, intended, designed) |
| procrustean(harsh, cruel, merciless, ruthless) |
| reliable(adjective, resolute, persistent, dedicated, unwavering) |
| required(adjective, obvious, required, inevitable, inescapable) |
| resistless |
| savage(adjective, mean, hard, tough, harsh) |
| serious(adjective, close, strong, hard, tough) |
| staunch(adjective, set, hard, determined, resolute) |
| stony-hearted(adjective, revenge) |