homesick
adj.feeling sad and missing your family, friends, or the place where you grew up. You often feel this way when you are away from home for a long time.
adj.experiencing a sense of longing for one's native place or former home. Often used predicatively after linking verbs like 'feel' or 'get'.
“I feel homesick when I am away from my family.”
“Many students who move to a new country find themselves feeling homesick during their first few months of university.”
“The protagonist's journey is marked by a deepening sense of homesickness, as the unfamiliar landscape of the new city begins to feel increasingly alien compared to the rolling hills of his childhood.”
Back-formation from homesickness, equivalent to home + sick.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.