Hurtful
Part of speech: adjective
Definition: Tending to impair or damage; injurious; mischievous; occasioning loss or injury; causing pain or suffering.
Example sentence: The scariest thought in the world is that someday I'll wake up and realize I've been sleepwalking through my life: underappreciating the people I love, making the same hurtful mistakes over and over, a slave to neuroses, fear, and the habitual.
Unkind
Part of speech: adjective
Definition: Having no race or kindred; childless.Not kind; contrary to nature, or the law of kind or kindred; unnatural.Wanting in kindness, sympathy, benevolence, gratitude, or the like; cruel; harsh; unjust; ungrateful.
Example sentence: In London, people can be so... well, it's not even a case of people being unkind or unfriendly. You just don't make any contact in London. You go from A to B with your eyes on the pavement.