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

• IPA: /ˈdʌb.li/, /ˈdʌ.bəl.li/

doubly (not comparable)

1. (usually, of relative importance, of degree, quantity or measure) In a double manner; with twice the severity or degree.

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

   • 1979 October 12, Douglas Adams, chapter 2, in The Hitchhiker's Guide to the Galaxy, London: Pan Books, →ISBN:

     Time is an illusion. Lunchtime doubly so.

2. In two ways

   Stealing and then lying about it is doubly wrong.

3. (obsolete) with duplicity

• (in a double manner) double, twofold; see also Thesaurus:twice
• (in two ways) dually
• (with duplicity) deceptively, double-handedly, duplicitously

• French: doublement
• German: doppelt
• Italian: doppiamente
• Russian: вдвойне
• Spanish: doblemente