dully
adverb /ˈdʌlli/
  /ˈdʌlli/
- in a way that shows no feeling, understanding or interest
- ‘I suppose so,’ she said dully.
 
 - in a way that is slightly dark, and not at all bright
- The moonlight shone dully on the surface of the lake.
 
 - ache/throb dully to cause you pain in a continuous but not very severe way
- His leg ached dully.