Antonyms are words that have opposite meanings. For the phrase "throws light upon," the antonyms could be words like obscures, masks, hides, veils, or conceals. Instead of shedding light on a subject, these words imply that there is an intentional or unintentional effort to obscure or withhold information. Alternatively, antonyms could include words that mean to confuse, mislead or deceive. However, it is important to note that the context of the word or phrase will determine the most appropriate antonym. To better understand the meaning of a word, it can be helpful to explore its antonyms, which provide a contrasting perspective.