7 letters · 7 points in Scrabble
noun understatement for rhetorical effect (especially when expressing an affirmative by negating its contrary)
originLearned borrowing from Late Latin lītotēs, from Ancient Greek λιτότης (litótēs, literally “plainness”), from λιτός (litós, “simple”).
Etymology from Wiktionary, CC BY-SA 3.0