Translation guide
Describes something without foundation, evidence, or good reason. In Japanese, this is expressed through adjectives, verbs, and set phrases that emphasize lack of grounds or proof.
To say a claim, accusation, or rumor has no supporting evidence.
Literally 'there is no basis/grounds'. A direct and common way to say something is baseless.
その噂は全く根拠がない。
That rumor is completely baseless.
Attributive form meaning 'baseless' or 'unfounded', used before nouns like 噂 (rumor) or 批判 (criticism).
To describe an object or structure that lacks a supporting base.
Literally 'has no foundation/base'. Used for physical structures or metaphorically for arguments.
この建物は土台がないように見える。
This building looks like it has no foundation.
根拠のない批判は無視していい。
You can ignore baseless criticism.
A formal compound meaning 'groundless' or 'completely untrue'. Often used in legal or official contexts.
その告発は事実無根であることが判明した。
The accusation turned out to be completely baseless.
Means 'nonsense' or 'unfounded'. Stronger and more casual, implying the statement is random or made up.
彼の言うことはでたらめだ。
What he says is baseless nonsense.
Similar to 土台がない, but 基礎 is more about the fundamental base, often used in abstract contexts as well.
その理論には科学的な基礎がない。
That theory has no scientific basis.