Feeling unhappy (3)

I believe the answer is:

sad

(Other definitions for sad that I've seen before include "Winter blues, initially" , "'Unhappy, sorry (3)'" , "Despondent" , "Melancholy, downhearted" , "Blue" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.