Sentence:  Which suiting the case so well, you'll forgive me, Sir, for "popping down" in "English metre", as the <WSD>"translative</WSD> impulse" (pardon a new word, and yet we "scholars" are not fond of "authenticating new" words) came upon me "uncalled for:" 
Meaning of the word marked with <WSD> tags:  Of, or relating to the translation of language.