Upbraid is a verb that means to reprimand or scold someone harshly. Its antonyms, or opposite words, include commend, compliment, and praise. These words have positive connotations and refer to the act of showing approval or admiration for someone's actions or behavior. Other antonyms for upbraid include congratulate, flatter, and laud, all of which express admiration and appreciation rather than criticism or disapproval. Using these antonyms can help to create a more positive and supportive environment, as well as improve relationships and build trust between individuals.