catflap.org Online Dictionary Query

  thinning away /θˈɪnɪŋ ɐwˈeɪ/
  ausdünnend, auskeilend, dünner werdend
     Synonyms: wedging out, thinning out, tapering out, edging away, pinching out, dying away, ending off
  
   see: wedge out, thin away, thin out, taper out, edge away, pinch out, die away, end off, wedged out, thinned away, thinned out, tapered out, edged away, pinched out, died away, ended off