stupidstitious adjective1 •(slang, disapproving) Of a belief or superstition, characterized by irrationality and a lack of critical reasoning to the extent that it is viewed as especially foolish or unintelligent.My dear Daughter is what I call a little stupidstitious in her religious observances', he wrote shortly after his ninety-second birthday. — 1982 formsmore stupidstitious · most stupidstitious
