tortious UK /ˈtɔːʃəs/US /ˈtɔɹʃəs/ adjective2 •Of, pertaining to, or characteristic of torts. •(no longer used) Wrongful; harmful.he found great store of hoorded threasure, / The which that tyrant gathered had by wrong / And tortious powre […] — 1596 formsmore tortious · most tortious