Pronunciation: (led'n),[key] —adj. 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.
—v.t. to make leaden, sluggish, dull, etc.: Fatigue had leadened his brain and step.