The term 'ADVICE MAVEN' can be broken down into two words: 'ADVICE' and 'MAVEN'. A MAVEN is an expert or connoisseur in a particular field, so an ADVICE MAVEN would be someone who is an expert in giving ADVICE. This person is often referred to as a 'GURU', which is a four letter word. An ADVICE MAVEN is someone who is highly knowledgeable in a certain area and is sought out for their expertise and wisdom. They are often seen as a source of guidance and support, and their ADVICE is often seen as invaluable.