leaden

Made of or containing lead.

Heavy and inert.

Listless; sluggish.

Lacking liveliness or sparkle; dull.

Downcast; depressed.

Dull, dark gray in color.

To fasten or cover with lead.

To weigh down with or as with lead, as one’s spirits.

Made or consisting of lead: as, a leaden ball; a leaden coffin.