1.
groundless; baseless; without factual foundation
States that a claim, rumor, or accusation has no basis in fact. Used almost exclusively in the set phrase 事実無根 "completely without basis."
その噂は無根だ。
That rumor is groundless.
事実無根の報道に抗議した。
I protested the baseless news report.
会社は記事の内容を事実無根だとして、法的措置を検討している。
The company calls the article's contents completely groundless and is considering legal action.
Compound of 無 (without) + 根 (root). Strong, formal word reserved for denying rumors, accusations, or reports.
COMMON COLLOCATIONS:
- 事実無根: completely groundless; without any basis in fact
- 無根の噂: baseless rumor
- 無根の中傷: groundless slander
- 無根と断つ: firmly deny
REGISTER:
Formal and written. Common in news, press releases, and legal contexts. In casual conversation, 根拠がない "has no basis" is more natural.