Backer Backer synonyms supporter backer and supporter sponsor backer and sponsor patron backer and patron advocate backer and advocate angel backer and angel benefactor backer and benefactor promoter backer and promoter proponent backer and proponent ally backer and ally champion backer and champion Full list of synonyms (579) Backer antonyms opponent backer and opponent antagonist backer and antagonist enemy backer and enemy adversary backer and adversary opposition backer and opposition foe backer and foe opposer backer and opposer detractor backer and detractor faultfinder backer and faultfinder critic backer and critic Full list of antonyms (12) Share this picture Share this image Share this picture Share this image