When describing something that indicates a certain trait or quality, the phrase "telling of" can come in handy. However, if you're looking to switch up your vocabulary, there are several synonyms you can use. "Revealing" is a strong choice that implies something previously unknown is being exposed. "Illustrative" suggests that something is being used to exemplify a larger point. "Indicative" emphasizes that the trait or quality being conveyed is of major importance. "Symbolic" draws attention to the deeper meaning behind the detail being described. No matter which word you choose, using a synonym for "telling of" can give your writing a more varied and sophisticated tone.