Definition of dull
- dull Adjective Lacking the ability to cut easily; not sharp.
- dull Adjective Boring; not exciting or interesting.
- dull Adjective Not shiny; having a matte finish or no particular luster.
- dull Adjective Not bright or intelligent; stupid; slow of understanding.
- dull Verb To render dull; to remove or blunt an edge or something that was sharp.
- dull Verb To soften, moderate or blunt.
- dull Verb To lose a sharp edge; to become dull.