Not having an edge, or whose boundary is unclear.(adjective)
Not having a sharp cutting edge; blunt.(adjective)
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Use "edgeless" in a sentence
"Robert Lang has gone even further, using the term "edgeless cities" to describe what he calls an increasingly "elusive metropolis" with highly dispersed employment."
"But only the 3D models, which were previewed at CES, feature a new "One "design that uses an ultra-thin bezel to create an "edgeless" appearance."
"Ms. Paige sang "I'm Still Here" with panache, but her diction was too edgeless to cut through the orchestra."