Lugubrious

/luːˈɡuːbriəs/ adjective hard

Exaggeratedly or theatrically mournful, beyond what a situation calls for.

The actor's lugubrious sighs at every setback made the tragedy feel almost comic.

Memory Trick

From Latin 'lugere,' to mourn — lugubrious sadness is mourning turned up to a theatrical, over-the-top volume.