Spearheading definition of spearheading by The Free DictionaryAlternate words of leading encompass steering, paving the way for, championing, taking the lead in, being the front-runner for, giving impetus, instigating, fostering and ushering in. Other words related to synonym include word with similar meaning as well as definition of synonym. Content planned to target the keyword spearheading alternative word can be developed to engage readers.