The phrase "put mind at ease" implies a sense of comfort, security, and peace of mind. Antonyms for this phrase would include words that evoke the opposite feelings of anxiety, worry, and unease. Some possible antonyms could be "unsettle," "disturb," "disrupt," "disconcert," "unbalance," "unhinge," "perturb," "agitate," "worry," "stress," and "alarm." These words suggest a state of discomfort, turmoil, and concern that is the opposite of the calm and reassurance that "put mind at ease" conveys. It is important to be mindful of the words we use and their meanings, as they can have a significant impact on how we feel and perceive the world around us.