untruss noun 1verb 1forms 3 noun1 •(no longer used) an untrusser or public whipper verb1 •To free from a truss; to untie or unfastenJust to prove that he hurried over and untrussed Peter and Uncle Crumplebum. And the miser’s niece unrabbited her uncle. — 1936 formsuntrussed · untrussing · untrusses