ὄνομα [47 verses](noun sg neut acc) "Name" is onoma, which means "name." It means both the reputation of "fame," and "a name and nothing else," as opposed to a real person. Acting in someone's name means to act on their behalf, as their representative. -- The Greek word translated as "name" is much more complicated than it might at first appear. It can simply mean a "name" as it does in English, but it doesn't mean the things themselves, but what people call it. For example, it can mean a "false name," or "a pretense" as we say "this is a marriage in name only." It can also mean representing another person's authority, as we say, "he is acting in the name of the boss." See this article for more.