also: ぼうげん
noun
reckless remark; thoughtless words; falsehood
Refers to irresponsible, rash, or untrue statements. Often used in formal or critical contexts to describe someone's careless or baseless words.
彼の妄言に惑わされてはいけない。
Don't be misled by his reckless remarks.
その政治家は妄言を繰り返し、批判を浴びた。
The politician repeated thoughtless words and drew criticism.