CONCLUSIVELY
conclusively, once and for all
(adverb) in a conclusive way; “we settled the problem conclusively”
Source: WordNet® 3.1
Etymology
Adverb
conclusively (comparative more conclusively, superlative most conclusively)
In a conclusive manner; with finality.
Source: Wiktionary
Con*clu"sive*ly, adv.
Definition: In the way of conclusion; decisively; positively. Burke.
CONCLUSIVE
Con*clu"sive, a. Etym: [Cf. F. conclusif.]
Definition: Belonging to a close or termination; decisive; convincing;
putting an end to debate or question; leading to, or involving, a
conclusion or decision.
Secret reasons . . . equally conclusive for us as they were for them.
Rogers.
Conclusive evidence (Law), that of which, from its nature, the law
allows no contradiction or explanation.
– Conclusive presumption (Law), an inference which the law makes so
peremptorily that it will not allow it to be overthrown by any
contrary proof, however strong.
Syn.
– Final; ultimate; unanswerable. See Final.
Source: Webster’s Unabridged Dictionary 1913 Edition