Open English Wordnet
Adjectives
(s)dull, leadendarkened with overcast“a dull sky”,
“the sky was leaden and thick” (s)leaden, weightedmade heavy or weighted down with weariness“his leaden arms”,
“weighted eyelids” (a)leadenmade of lead“a leaden weight” (s)heavy, leadenlacking lightness or liveliness“heavy humor”,
“a leaden conversation”