Hi there! ✨ British slang has a word that puzzles many learners. When a Brit says "He grassed me up" or "He's a grass," they're not talking about gardening. They're talking about a police informant, a traitor, a snitch. But where does this come from? Let's dig into the etymological mystery. 🤓 Linguists still debate the true origin. Here are the main suspects: ✔️Snake in the grass 🐍 The most elegant explanation traces back to the Latin proverb "latet anguis in herba" (a snake hides in the grass) from Virgil's poems . In English, the phrase "snake in the grass" has meant a treacherous, hidden enemy since the late 17th century. The logic: a traitor is a snake hidden in the grass. Over time, "grass" alone may have come to symbolize the betrayal itself. ✔️Cockney Rhyming Slang (Grasshopper — Copper) 🦗 This one's for linguistics detectives. In London's rhyming slang, "grasshopper" rhymed with "copper" (police officer) . Slang dictionaries recorded "grasshopper" meaning "policeman" as early as 1893 . Later, it was shortened to just "grass," and the meaning shifted from the police themselves to the informant who works with them . 🦉Whichever theory is correct, the first documented use of "grass" meaning "informer" appears in Arthur Gardner's crime novel Tinker's Kitchen in 1932 . By the late 1930s, it was firmly established in criminal underworld slang . In the 1970s, journalists coined "supergrass" for informants who testified against former accomplices in high-profile mass trials . The term became notorious in Northern Ireland during the 1980s, when arrested IRA members turned informers, leading to hundreds of arrests (though many convictions were later overturned) . 📌Grass (noun) — informer, snitch 📌To grass (someone) up (verb) — to inform on someone Have a nice day! ✨ #History #english #TranslationTroubles