When engaging in a debate, come bolstered with an irrefragable argument. This adjective comes from the Latin “irrefragabilis,” the combination of the words “in” (“not”) and “refragari” (“oppose”). Before you start throwing out statistics and dates, do some fact-checking. “Snopes” is a website with a mission to verify whether various outlandish-sounding claims are irrefragable. For example, the site has confirmed that the radiation from Bluetooth-operated earbuds does not, in fact, “fry our brains.”