The term 'socially dominant' can be described by the word 'alpha', which is a five-letter word. Alpha is a term used to describe an individual who is socially dominant in a group setting. This person is usually the leader of the group and is respected by the other members. They are often seen as the most influential and powerful member of the group. Alpha individuals typically have strong personalities and are confident in their abilities. They are often seen as the most successful and respected members of the group.