8 letters · 10 points in Scrabble
noun painful spasm of the anal sphincter along with an urgent desire to defecate without the significant production of feces; associated with irritable bowel syndrome
originBorrowing from Medieval Latin tēnesmus, from Ancient Greek τεινεσμός (teinesmós, “vain endeavor to evacuate”), from τείνω (teínō, “to stretch, to pull tight”) + -εσμός (-esmós, nominal suffix).
Etymology from Wiktionary, CC BY-SA 3.0