English edit

Etymology edit

From dull +‎ -some.

Adjective edit

dullsome (comparative more dullsome, superlative most dullsome)

  1. (archaic) Characterised or marked by dullness.
    • 1908, The New England Magazine, volume 43, page 176:
      Then suddenly a breath of air,
      Unheralded, from who knows where,
      Brings to my sense an odor faint,
      Unrecognized yet eloquent,
      And whiff! the dullsome street is gone — []