das·tard·ly 
/ˈdæstɚdli/ adjective
/ˈdæstɚdli/ adjective [more dastardly; most dastardly] old-fashioned : very cruel : using tricks to hurt people
▪ a dastardly villain ▪ dastardly deeds ▪ a dastardly attack on innocent civilians
▪ a dastardly villain ▪ dastardly deeds ▪ a dastardly attack on innocent civilians
