roborant UK /ˈɹəʊbəɹənt/US /ˈɹoʊbəˌɹənt/noun 1adjective 2forms 1 noun1 •(no longer used) A strengthening, invigorating, or restorative medicine, food, or treatment. adjective2 •Synonym of strengthening or restorative. •Synonym of energizing or invigorating. formsroborants