English edit

Etymology edit

gnashing +‎ -ly

Adverb edit

gnashingly (comparative more gnashingly, superlative most gnashingly)

  1. While, or as if, gnashing.
    • 2004, Mike Barnes, Contrary angel, page 132:
      She watched the horse chew gnashingly, his lower jaw slipping sideways. She saw big yellow teeth, and white froth, mixed with apple bits, bubbling out.