What is the Hebrew word for homesickness?

There isn't one single perfect translation for "homesickness" in Hebrew. The best choice depends on the nuance you want to convey. However, the most common and generally understood option is געגועים (ge'agu'im). While literally translating to "longing," "yearning," or "pining," it's frequently used to express homesickness, especially the emotional longing for a place and people.