The phrase "biggest offenders" refers to the people or things that are most responsible for a particular wrongdoing or negative behavior. Full definition
Biggest offenders include those where the authors lack of imagination or. (petesgrillandpizza.com)
Bosses are even bigger offenders in this regard, who not only rise from the dead time and time again but don't evolve in the process, leaving you to work the same maneuvers six or seven times over to finish the fight. (darkstation.com)
Anti depressants and birth control pills are the two biggest offenders when it comes to weight gain or the inability to lose weight because of prescription medication. (themilitarydiet.com)