Definify.com

Webster 1828 Edition

adv.

s as z. Attentively; carefully; with close observation.

observingly ‎(comparative more observingly, superlative most observingly)

attentively, observantly
- 1989, Philip G. Hill, Our Dramatic Heritage: Volume 4 (page 149)
  As Goethe had observingly read, a Frankfurt police ordinance of the fifteenth-century forbade fallen women to wear jewelry, silk, satin, or damask, and denied them the use of a pew in church.