5 letters · 15 points in Scrabble
noun (Italian cuisine) squid prepared as food
noun widely distributed fast-moving ten-armed cephalopod mollusk having a long tapered body with triangular tail fins
originPossibly a blend of stupid + quick; "stupid, quick, under-dressed and imminently dead", a claimed origin, is probably a backronym.
Etymology from Wiktionary, CC BY-SA 3.0