10 letters · 20 points in Scrabble
noun lack of self-confidence
originFrom Latin diffīdentiam (“distrust”), from diffīdere (“to mistrust”), from dis- and fīdere (“to trust”). Attested since ∼1400. The original sense was antonymous with confidence, and the modern sense of ‘distrusting oneself’ dates from the 1650s.
Etymology from Wiktionary, CC BY-SA 3.0