1. To an incurable degree
   "she was incurably optimistic" 
2. In a manner impossible to cure
   "he is incurably ill"

See also: incurable

• stir up
• stir-crazy
• stirabout
• stirk
• stirps
• stirred
• stirred up
• stirrer
• stirring
• stirringly
• stirrup
• stirrup bone
• stirrup cup
• stirrup iron
• stirrup pump
• stirrup-shaped
• stitch
• stitched
• stitcher
• stitchery
• stitching
• stitchwort
• stithy
• stiver
• Stizidae