1. darkened with overcast

- the sky was leaden and thick

Similar word(s): cloudy, dull

2. made heavy or weighted down with weariness

- his leaden arms

Similar word(s): heavy, weighted

3. made of lead

- a leaden weight

4. (of movement) slow and laborious

- leaden steps

Similar word(s): effortful, plodding

5. lacking lightness or liveliness

- a leaden conversation

Similar word(s): dull, heavy