| hard-hearted(adjective, mean, hard, tough, harsh) |
| hard-shell(adjective, strong, hard, tough, severe) |
| heartless(adjective, mean, hard, tough, harsh) |
| high and mighty(expression, ridiculous, pitiful, arrogant, insolent) |
| high hat(expression, ridiculous, pitiful, arrogant, disdainful) |
| hostile(adjective, hard, evil, rough, nasty) |
| ignoble(adjective, hard, evil, rough, nasty) |
| ill-tempered(adjective, hard, evil, rough, nasty) |
| impassive(adjective, hard, secure, steady, fixed) |
| imprudent(determined, impulsive, stubborn, reckless, impetuous) |
| indifferent(adjective, hard, unfeeling, unsympathetic, hardened) |
| indurate(adjective, mean, hard, tough, harsh) |
| infamous(adjective, hard, evil, rough, nasty) |
| insensible(adjective, strong, hard, tough, unfeeling) |
| insensitive(adjective, hard, unfeeling, unsympathetic, hardened) |
| insulting(ridiculous, pitiful, arrogant, insolent, laughable) |
| intractable(sharp, firm, determined, practical, impulsive) |
| inured(adjective, hard, unfeeling, unsympathetic, hardened) |
| iron(adjective, mean, hard, tough, harsh) |
| ironclad(adjective, severe, harsh, stiff, rigid) |