refuter

Noun

A person who refutes with an argument or example. / An argument or example that refutes.

Japanese Meaning

議論や例によって反論する人、またはそうした行為を示すもの

The skeptical scientist acted as a refuter during the panel discussion, challenging weak hypotheses with clear evidence.

その懐疑的な科学者はパネル討論で反駁者として振る舞い、弱い仮説を明確な証拠で論破した。

Sense（1）

A person who refutes with an argument or example.

Sense（2）

An argument or example that refutes.

refuters

（ plural ）