Meaning of Sanskrit Word Acharya in English
Ācārya (आचार्य): This is a Sanskrit word commonly used in many regional languages throughout India. In its contextual form, it means a spiritual teacher who instructs the students or learners towards the knowledge of Brahman. It is affixed to many names and other words.
One more meaning that is associated with this word is ‘the one who practices’, and then supposedly preaches about that practice. So, contextually, it makes sense that a spiritual teacher or a teacher having great knowledge will be practicing what he is propagating or will be having a direct experience of the results of that knowledge.