conclusively

In a conclusive manner; with finality.

Japanese Meaning

決定的に（確定的な結果や最終的な判断を伴って） / 最終的に（迷いなく結論に至る）

The study conclusively demonstrated that the new treatment reduces symptoms in most patients.

その研究は、新しい治療法が大多数の患者の症状を軽減することを決定的に示した。

Sense（1）

In a conclusive manner; with finality.

Once the final experiment had been performed, the theory was conclusively proved.

more conclusively

（ comparative ）

most conclusively

（ superlative ）