Ruthlessly in example sentence
Dianna's assisted by friendly karate master Joe (amiable Chiquito), faces opposition from undercover narcotics agent Elaine (lovely, buxom blonde babe Pat Anderson), and romances cocky, ruthlessly ambitious Charlie (essayed with supremely arrogant aplomb by Stan Shaw) while plotting her revenge against nefarious drug kingpin Sid (an effectively slimy Ken Metcalfe).