moron
From Longman Dictionary of Contemporary EnglishRelated topics: Illness & disabilitymoronmo‧ron /ˈmɔːrɒn $ -rɑːn/ noun [countable] 1 informal not politeSTUPID/NOT INTELLIGENT a very offensive word for someone who you think is very stupid SYN idiotDon’t leave it there, you moron!2 technical old-fashionedMISTUPID/NOT INTELLIGENT someone whose intelligence has not developed to the normal level —moronic /məˈrɒnɪk $ -ˈrɑː-/ adjective a moronic grinOrigin moron (1900-2000) Greek moros “of low intelligence”