Editorial Note: This article is written with editorial review and topic relevance in mind.
People is a collective noun. What is the plural of people person? When we talk about a specific group of people, we consider it as singular and therefore, no need to add s.
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A people person is someone who is outgoing and has good communication skills. Peoples is used when we talk about two or more. He was always energetic and positive and he was a people person.