Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dē-narro, āre, v. a., to tell, relate, recount, narrate (very rare; in the class. per. only once in Hor.): haec adeo ego illi jam denarrabo, Ter. Ph. 5, 7, 51: matri denarrat, ut, etc., Hor. S. 2, 3, 315: puer, quid ipse matri dixisset, rem sicuti fuerat denarrat, Gell. 1, 23, 12.