'Seventhly' definitions:

Definition of 'seventhly'

(from WordNet)
adverb
In the seventh place; "seventhly, you have no right to cancel the lease in mid-year"

Definition of 'Seventhly'

From: GCIDE
  • Seventhly \Sev"enth*ly\, adv. In the seventh place. [1913 Webster]