Definify.com

Webster 1828 Edition

adv.

Thinly; not densely.

Finely; not grossly or thickly.

The opakest bodies, if subtilly divided--become perfectly transparent.

Artfully; cunningly; craftily; as a scheme subtilly contrived.

subtilly ‎(comparative more subtilly, superlative most subtilly)

(obsolete) subtly
- John Foxe
  […] a certain vessel finely and subtilly made of the precious stone onychinus […]