Definify.com

Webster 1913 Edition

adv.

Conclusively.

[R.]

Digby.

adv.

Conclusively; with incontrovertible evidence. [Little used.]

concludingly ‎(comparative more concludingly, superlative most concludingly)

In a concluding manner; finally; conclusively.
- Digby
  Examine whether the opinion you meet with, repugnant to what you were formerly embued with, be concludingly demonstrated or not.