When people say 'don't teach your grandmother to suck eggs', they mean that people shouldn't try to teach someone who has experience or is an expert in that area.
An grandmother idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with grandmother, allowing users to choose the best word for their specific context.
Cùng học tiếng anh với từ điển Từ đồng nghĩa, cách dùng từ tương tự, Thành ngữ, tục ngữ grandmother