SEVERE

(NOT KIND) [adjective] - not kind or sympathetic; not willing to accept other people's mistakes or failuresLaura's teacher is so severe that she's afraid of him.She spoke in a severe voice.My parents were always very severe with me and my brother.The government is currently facing severe criticism.The judge said that he was passing the most severe sentence that the law allowed.There are severe penalties for failing to declare all your income to the tax authorities.