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.
To describe an object or structure that lacks a supporting base.
Literally 'has no foundation/base'. Used for physical structures or metaphorically for arguments.
That rumor is completely baseless.
Attributive form meaning 'baseless' or 'unfounded', used before nouns like 噂 (rumor) or 批判 (criticism).
You can ignore baseless criticism.
A formal compound meaning 'groundless' or 'completely untrue'. Often used in legal or official contexts.
The accusation turned out to be completely baseless.
Means 'nonsense' or 'unfounded'. Stronger and more casual, implying the statement is random or made up.
What he says is baseless nonsense.
This building looks like it has no foundation.
Similar to 土台がない, but 基礎 is more about the fundamental base, often used in abstract contexts as well.
That theory has no scientific basis.