uptilt verb 2adjective 1noun 1forms 3 verb2 •To tilt upward. •To cause to tilt upward."Oh, that kind," retorted Carl, uptilting his chin a little. Carl never did like to own up he had made a mistake. — 1970 adjective1 •Tilted upward. noun1 •An upward tilt. formsuptilted · uptilting · uptilts