mope

mope /ˈmoʊp/ verb
mopes; moped; moping
mope
/ˈmoʊp/
verb
mopes; moped; moping
Britannica Dictionary definition of MOPE
[no object] disapproving
1 
: to behave in a way that shows you are unhappy and depressed
2 
: to move around slowly because you are unhappy — often + around or (Brit) about