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Webster 1913 Edition

(dŭb′ly̆)

adv.

In twice the quantity; to twice the degree;

as,

doubly

wise or good; to be

doubly

sensible of an obligation.

Dryden.

Deceitfully.

“A man that deals doubly.”

Huloet.

adv.

In twice the quantity; to twice the degree; as doubly wise or good; to be doubly sensible of an obligation.

doubly ‎(comparative more doubly, superlative most doubly)

(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.
in two ways
doubly wrong
(obsolete) with duplicity

in a double manner

↑ “doubly”, in (Please provide the title of the work) (in English), Random House, Inc., accessed 2014-12-02