lugubrious

/ləˈɡ(y)o͞obrēəs/
adjective

1. looking or sounding sad and dismal

Mornings, we walked down to the beach, a distance of a mile, or sometimes we took bicycles, big lugubrious cruiser that didn’t belong to anyone in particular, and went swimming.

– Carolyn Cooke, Amor and Psycho: Stories