1. To double the degree
   "she was doubly rewarded"
   - double, twice 
2. In a twofold manner
   "he was doubly wrong"
   - in two ways

See also: double

• subcontractor
• subcontrary
• subcortical
• subculture
• subcutaneous
• subcutaneous injection
• subcutaneous test
• subcutaneously
• subdata base
• subdeacon
• subdiaconate
• subdirectory
• subdivide
• subdivider
• subdivision
• subdivision Ascomycota
• subdivision Ascomycotina
• subdivision Basidiomycota
• subdivision Basidiomycotina
• subdivision Coniferophytina
• subdivision Cycadophyta
• subdivision Cycadophytina
• subdivision Deuteromycota
• subdivision Deuteromycotina
• subdivision Ginkgophyta