upstir noun 1verb 1forms 3 noun1 •Commotion; disturbance, tumult.The world is now in an upstir because this association is about to hold its great convention in New York City — 1983 verb1 •To disturb, cause a commotion, stir up.And conscience to upstir him […] — 1876 formsupstirred · upstirring · upstirs