Meaning

• To render dull; to remove or blunt an edge or something that was sharp.

  "Years of misuse have dulled the tools."

• To soften, moderate or blunt; to make dull, stupid, or sluggish; to stupefy.

  "He drinks to dull the pain."

• To lose a sharp edge; to become dull.

  "A razor will dull with use."

• To render dim or obscure; to sully; to tarnish.

Meaning

• Lacking the ability to cut easily; not sharp.

  "All these knives are dull."

• Boring; not exciting or interesting.

  "He sat through the dull lecture and barely stayed awake."

• Not shiny; having a matte finish or no particular luster or brightness.

  "Choose a dull finish to hide fingerprints."

• Not bright or intelligent; stupid; having slow understanding.

• Sluggish, listless.

• Cloudy, overcast.

  "It's a dull day."

• Insensible; unfeeling.

• Heavy; lifeless; inert.

• (of pain etc) Not intense; felt indistinctly or only slightly.

  "Pressing on the bruise produces a dull pain."

• (of a noise or sound) Not clear, muffled.