non est inventusyoudaoicibaDictYouDict[non est inventus 词源字典]
"‘The person is not to be found’: a phrase used by a sheriff in returning a writ, as a statement that the defendant is not to be found in the sheriff's jurisdiction", Late 15th cent.; earliest use found in Mankind. From post-classical Latin non est inventus he was not found from classical Latin nōn not + est inventus he is found, 3rd singular perfect passive indicative of invenīre.[non est inventus etymology, non est inventus origin, 英语词源]