Leaden (adjective)

Heavy or dull in color or feeling, as lead; weighing heavily on the spirits; dull and oppressive.

Origin:

From middle english leden, from old english lædene "made of lead", from læden "lead".

Examples:

1. The leaden sky threatened rain.
2. The leaden steps dragged as he walked.
3. The leaden weight of responsibility was hard to bear.
4. The leaden color of the metal was dull and unappealing.
5. The leaden feeling in her stomach was a sign of anxiety.