Deciding which new coinages to allow into the official record of the English language can be a tough and confusing job. The OED’s latest batch of additions also includes “dad dancing” (dancing poorly, as fathers allegedly do), “payday loan” (now depressingly topical but first recorded in 1937), transphobic (“hostile towards transsexual or transgender people”), and “wingsuit”, apparently a bat-like suit worn by skydivers. (Still no mention of “wingnut” in the combative political sense.) But the headline addition for most observers will be the new senses for “tweet” as a verb and noun. Twitter now enjoys the imprimatur of our most august lexicographers.