doubly

From Middle English dowbly, doubli, dubli, doubeliche, equivalent to double +‎ -ly.[1]

doubly (not comparable)

1. (usually of relative importance, of degree, quantity or measure) In a double manner; twice the severity or degree.
   • 1979, Douglas Adams, chapter 2, in The Hitchhiker’s Guide to the Galaxy:

     Time is an illusion. Lunchtime doubly so.

   My mother was always doubly careful when winding the grandfather clock.

2. In two ways

   Stealing and then lying about it is doubly wrong.

3. (obsolete) with duplicity

• bloudy