/ˈsoʊʃəlaɪz/
[verb] To spend time with other people in a friendly and relaxed way, or to teach a person or animal how to behave well with others. It can also mean to organize something, such as a business or service, so that it is owned or controlled by the public.
The word 'socialize' is younger than the United States itself — it only appeared in English in the early 1800s.
At the heart of 'socialize' lies the Latin word 'socius', meaning a companion, partner, or ally — someone who walks beside you. The Romans used 'socius' in a very practical sense: a business partner, a fellow soldier, or a political ally. From 'socius' came the Latin adjective 'socialis', meaning 'relating to companionship or partnership', which described the bonds between people who shared common goals or lived together in groups.
This Latin root passed into French as 'social', keeping much of its original meaning of belonging to a group or society. English borrowed 'social' directly from French in the 15th century, using it to describe anything connected to human company or community life. For centuries, 'social' did its work quietly as an adjective, describing gatherings, bonds, and relationships, but the verb form — 'socialize' — had not yet been born.
The verb 'socialize' emerged in English in the early 19th century, formed by adding the common English suffix '-ize' to 'social'. This suffix, which came into English from Greek '-izein' through Latin '-izare' and Old French '-iser', turns adjectives and nouns into verbs meaning 'to make into' or 'to act in the manner of'. So 'socialize' literally means 'to make social' or 'to act in a social way'. Its earliest recorded uses, around 1828, referred to making something fit for society or adapting it to community life.
Interestingly, the word developed in two quite different directions at the same time. On one hand, it came to mean the simple, human act of mixing with others — going to parties, chatting with neighbours, making friends. On the other hand, it took on a political and economic meaning: to 'socialize' an industry meant to bring it under public or community ownership, taking it away from private hands. This second meaning became especially important in political debates of the late 19th and early 20th centuries, as arguments about socialism and capitalism heated up across Europe and America.
A third meaning quietly entered the language through psychology and education: to 'socialize' a child or an animal means to teach them the rules and habits needed to live successfully with others. A well-socialized dog knows not to bite; a well-socialized child knows how to share and take turns. This usage reflects how deeply the idea of fitting into a group — which was already present in the Latin 'socius' — remains central to the word. From a Roman ally on the battlefield to a puppy learning to play nicely, the core idea has never really changed: humans, and their companions, are creatures who need to belong.