for specific rivals. >> he has failed in this campaign. >> early in the campaign, he leveled a seemingly mild jibe at fellow republican candidate jeb bush. >> he's very low energy. i'm not used to that kind of a person. so low energy, that every time you watch him, you fall asleep. >> but the label stuck. >> i defined him. i gave him this term low energy. i said he's a low energy individual. we do not need in this country low energy. >> and bush ended up dropping out early in the primary season. trump's nickname for his main rival, crooked hillary, became part of common language among his fans. >> crooked hillary has been proven to be crooked once again. >> some of trump's insults, however, seemed to back fire. >> the only thing she's got going is the woman's card. >> clinton jumped to spin this one in her favor. >> in fighting for women's health care is playing the woman card, then deal me in. >> her campaign even sending out