Edgeless
Part of speech: adjective
Definition: Not having an edge, or whose boundary is unclear. Not having a sharp cutting edge; blunt.
Dull
Part of speech: adjective
Definition: Lacking the ability to cut easily; not sharp.Boring; not exciting or interesting.Not shiny; having a matte finish or no particular luster.Not bright or intelligent; stupid; slow of understanding.
Part of speech: verb
Definition: To render dull; to remove or blunt an edge or something that was sharp.To soften, moderate or blunt.To lose a sharp edge; to become dull.
Example sentence: I have three phobias which, could I mute them, would make my life as slick as a sonnet, but as dull as ditch water: I hate to go to bed, I hate to get up, and I hate to be alone.