'Diligently' definitions:

Definition of 'diligently'

(from WordNet)
adverb
With diligence; in a diligent manner; "we may diligently observe the Lord's supper on the first day of the week, diligently preach the gospel, or minister to the saint"

Definition of 'Diligently'

From: GCIDE
  • Diligently \Dil"i*gent*ly\, adv. In a diligent manner; not carelessly; not negligently; with industry or assiduity. [1913 Webster]
  • Ye diligently keep commandments of the Lord your God. --Deut. vi. 17. [1913 Webster]