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

See also: dumb

• Lama pacos
• Lama peruana
• Lamaism
• Lamaist
• Lamarck
• Lamarckian
• Lamarckism
• lamasery
• Lamaze method
• Lamaze method of childbirth
• lamb
• lamb curry
• lamb roast
• lamb succory
• lamb's lettuce
• lamb's-quarter
• lamb's-quarters
• lambada
• lambast
• lambaste
• lambchop
• lambda
• lambda hyperon
• lambda particle
• lambdacism