12 letters · 20 points in Scrabble
adjective used of persons or their behavior
originFrom Late Middle English insufferable (“unbearably painful, intolerable”), and then either: * from in- (prefix meaning ‘not’) + sufferable, souffrable (“bearable, endurable, tolerable; allowable, permissible; able to or willing to bear hardship; forbearing, long-suffering; calm, self-restrained, slow to anger; capable of suffering”) (from Anglo-Norman sufferable, souffrable, and Old French…
Etymology from Wiktionary, CC BY-SA 3.0