Spearheading definition of spearheading by The Free DictionarySynonym terms of spearheading include steering, forgesetting, championing, leading the charge in, being the front-runner for, giving impetus, instigating, nurturing as well as marking the dawn of. Synonyms for synonym include equivalent and thesaurus entry. Content planned for the keyword synonym spearheading can be developed to captivate the intended audience.