Homesick means sad because you miss the place you come from. Feel homesick, homesick for the hills, terribly homesick.
It is the specific ache for home rather than general unhappiness, and it is strongest in the first weeks away and can return years later without warning. Homesickness is a recognised adjustment difficulty in students and in people who have migrated. Note the German Heimweh and the Welsh hiraeth, which name the same thing with different weights, and that hiraeth is often said to be untranslatable and is roughly this word with more history in it.
1adjectivehomesickSad because you miss the place you come from.
“On his first night at boarding school, he felt terribly homesick.”
homesick is a longing for home.
Back-formation from homesickness., equivalent to home + sick.
Etymology from Wiktionary, CC BY-SA
Practised in Around the House