ERT

Origin

From Middle English erten, ertin, from Old Norse erta (“to provoke, incite, tease”), from Proto-Germanic *artijaną (“to excite, tease”), from Proto-Indo-European *h₂erd- (“sharp point, stinger”). Cognate with Icelandic erta (“to irritate”), Norwegian erta (“to taunt”), Swedish ärta (“to tease, jibe”), Old Irish aird (“point, ord, end point”), Ancient Greek ἄρδις (árdis, “arrowhead”).