Heart sick is a common phrase used to describe a feeling of deep sadness or emotional pain. However, there are many other words that can be used to convey a similar feeling. Some synonyms for heart sick include despondent, melancholy, sorrowful, dejected, gloomy, and disheartened. Other words that can be used to describe this feeling include morose, woeful, bereaved, anguished, and crestfallen. All of these words describe a feeling of deep sadness that can be caused by a variety of different situations or experiences. Whether you are experiencing heartache due to a relationship, a loss, or simply the challenges of daily life, these words can help you express your emotions in a more nuanced and meaningful way.