noun
falsehood; untrue statement
General term for a false or insincere statement; somewhat formal or literary.
彼の言葉は虚辞に過ぎなかった。
His words were nothing more than falsehoods.
noun
syntactic expletive
Linguistics term for a word that fills a syntactic slot without adding meaning, such as 'it' in 'It is raining'.
英語の「It is raining」の「It」は虚辞と呼ばれる。
The 'It' in English 'It is raining' is called a syntactic expletive.