per·func·to·ry 
/pɚˈfʌŋktəri/ adjective
/pɚˈfʌŋktəri/ adjective [more perfunctory; most perfunctory] formal — used to describe something that is done without energy or enthusiasm because of habit or because it is expected ▪ a perfunctory smile/nod/salute ▪ He made/issued a perfunctory statement supporting the mayor.
— per·func·to·ri·ly /pɚˈfʌŋktərəli/ adverb
▪ She smiled/nodded perfunctorily.
/pɚˈfʌŋktərəli/ adverb ▪ She smiled/nodded perfunctorily.
