An ex-plainer is someone who provides a detailed explanation or clarification about a concept or topic. Synonyms for ex-plainer include educator, instructor, teacher, tutor, mentor, guide, coach, lecturer, presenter, and trainer. Each of these words carries a slightly different connotation, but they all refer to someone who imparts knowledge or understanding to others. Whether in a formal setting like a classroom or workplace, or in a more casual conversation, a skilled ex-plainer can help others to better understand a complex issue. These synonyms can be used interchangeably with ex-plainer to describe someone who shares their expertise to help others learn and grow.