When we say someone is in high spirits, we mean that they are happy, cheerful, and full of energy. Antonyms for this phrase can include terms such as unhappy, depressed, low-spirited, downhearted, and gloomy. These words imply a lack of enthusiasm, energy, and joy. When someone is low-spirited or gloomy, they generally have a negative outlook on life and may be less inclined to engage in social activities. Conversely, when in high spirits, we can expect someone to be lively, social, and optimistic. With the help of antonyms, we can better understand the nuances of language and express ourselves with greater accuracy.