spearheaded Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. 1 the pointed head of a spear 2 the leading person; part; or group in an endeavor; esp. in a military attack Example Sentence he spearheaded the effort to find a cure for the disease. Synonyms head; lead; be the leader of Antonyms follow Hear It! Say It! Write It! spearheaded Switch to cursive Start Share with your friends: