When it comes to expressing a state of increased discontent or unhappiness, we can turn to numerous synonyms for the word "unhappier". Some alternative words could be "sadder", emphasizing a deep sense of sorrow; "gloomier", connoting a darker and more dismal mood; "miserable", describing a state of extreme unhappiness or distress. Additionally, we may use "downcast" to convey a feeling of dejection, or "despondent" to depict a state of utter hopelessness. Alternatively, one could use "wretched" to highlight a profound sense of misery, or "discontented" to express dissatisfaction with one's situation. These alternatives allow for a more nuanced and diverse expression of unhappiness.