Definitions from Wiktionary ( )

▸ adjective:  Lacking the ability to cut easily; not sharp.
▸ adjective:  Boring; not exciting or interesting.
▸ adjective:  Not shiny; having a matte finish or no particular luster or brightness.
▸ adjective:  Not bright or intelligent; stupid; having slow understanding.
▸ adjective:  Sluggish, listless.
▸ adjective:  Bored, depressed, down.
▸ adjective:  Cloudy, overcast.
▸ adjective:  Insensible; unfeeling.
▸ adjective:  Heavy; lifeless; inert.
▸ adjective:  (of pain etc) Not intense; felt indistinctly or only slightly.
▸ adjective:  Not clear, muffled. (of a noise or sound)
▸ verb:  (transitive) To render dull; to remove or blunt an edge or something that was sharp.
▸ verb:  (transitive) To soften, moderate or blunt; to make dull, stupid, or sluggish; to stupefy.
▸ verb:  (intransitive) To lose a sharp edge; to become dull.
▸ verb:  To render dim or obscure; to sully; to tarnish.
▸ noun:  A surname. of Scottish and German origin.
▸ noun:  A village in Perth and Kinross council area, Scotland.

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