Antonyms for the phrase "raise spirits" could be words like depress, dishearten, discourage, sadden, dampen or deflate. When someone raises spirits, they are bringing joy, hope, and optimism to those around them. However, when someone does the opposite, they can make others feel hopeless, sad, or discouraged. For instance, a person who constantly complains about everything without offering solutions or positive vibes could be viewed as a spirit damper. Therefore, it is important to be mindful of how our words and actions affect those around us. Instead of bringing others down, let us strive to lift their spirits up with positive energy and encouragement.