1. In a stupid manner
   - densely, obtusely 
2. In an inarticulate manner
   "I nodded dumbly and he slit the envelope"

See also: dumb

• silver thatch
• silver tree
• silver tree fern
• silver wattle
• silver wedding
• silver wedding anniversary
• silver whiting
• silver willow
• silver-blue
• silver-bodied
• silver-colored
• silver-coloured
• silver-gray
• silver-green
• silver-haired
• silver-lace
• silver-leafed
• silver-leaved
• silver-leaved nettle
• silver-leaved nightshade
• silver-leaved poplar
• silver-scaled
• silver-tongued
• silver-white
• silverback