B. The expertise or knowledge so obtained. Missing the opening act taught me a lesson about remaining late. lessen – to cause to lower; to belittle; to be significantly less; cut down: The suffering will lessen with time. → was können wir von dieser Geschichte lernen?; it was an important https://davidhoffmeister.com/david-hoffmeister-the-message/metaphysics-of-a-course-in-miracles/