educator
/ˈɛdjʊkeɪtə/noun
Someone whose work is teaching others, especially a person known for it.
The formal, slightly institutional word; teachers rarely call themselves educators in conversation. Common in policy writing and job titles.
Related words
lecturerSomeone whose job, often at a university, is to give talks that teach a subject.instructorA person who teaches a skill or subject.headmasterA man who is in charge of a school.scholarA person who studies a subject deeply, or a student, especially one holding a scholarship.headmistressA woman who is in charge of a school.pupilThe dark circular opening at the center of the eye that lets light in.