A "zealous advocate" is someone who passionately fights for or defends a particular cause, belief, or person. They are enthusiastic, dedicated, and committed to their cause and work tirelessly to support it. Full definition
By Bill Eddy Which is more likely to cause harm to individuals or families: letting them choose a mediator who is not an attorney to write their parenting plans and divorce agreements, or insisting that divorce agreements must be written by lawyers whose job is to act as zealous advocates for their clients? (apfmnet.org)
This is an honor bestowed upon only 5 percent of accident attorneys in Southern California and is meant to recognize lawyers who are esteemed in their community as zealous advocates for justice! (victimslawyer.com)
Resistance and opposition had been called for by zealous advocates of both private and public schools. (religion-online.org)