leaden

adjective

1. inertly heavy like lead; hard to lift or move: a leaden weight; leaden feet.
2. dull, spiritless, or gloomy, as in mood or thought: leaden prose; a leaden atmosphere.
3. of a dull gray color: leaden skies.
4. oppressive; heavy: a leaden silence.
5. sluggish; listless: They moved at a leaden pace.
6. of poor quality or little value.
7. made or consisting of lead.

verb (used with object)

8. to make leaden, sluggish, dull, etc.: Fatigue had leadened his brain and step.

adjective

1. heavy and inert
2. laboured or sluggishleaden steps
3. gloomy, spiritless, or lifeless
4. made partly or wholly of lead
5. of a dull greyish coloura leaden sky

adj.“made of lead,” Old English leaden, from lead (n.1) + -en (2). The figurative sense of “heavy, oppressive, dull” is attested by 1570s. Related: Leadenly; leadenness.