LACKLUSTRE • DICCIONARIO INGLES.COM • Definition of Lacklustre

... Westmore mills was not the type of man that Amherst's comments on his superior suggested. As he sat propped against the pillows, with a brick-red flush on his cheek-bones, he seemed at first glance to belong to the innumerable army of American business men—the sallow, undersized, lacklustre drudges who have never lifted their heads from the ledger. Even his eye, now bright with fever, was dull and non-committal in daily life; and perhaps only the ramifications of his wrinkles could have revealed what particular ambitions had ...

— The Fruit of the Tree • Edith Wharton