Becoming cheerful can sometimes be challenging, but knowing the opposite emotions or antonyms could give us an insight on how to combat it. Here are some words or phrases that are antonyms for becoming cheerful: dejected, despondent, sad, unhappy, downhearted, melancholic, and gloomy. In times of despair or sadness, it is important to acknowledge our emotions and work on overcoming them. Instead of dwelling on negative thoughts, we can try to shift our focus towards the things that bring us joy and positivity. It may take some time and effort, but with patience and practice, we can develop a more positive outlook and become cheerful once again.