socialize

Concise Oxford English Dictionary © 2008 Oxford University Press:
socialize /ˈsəʊʃəlʌɪz/ (or socialise)

▶verb

• 1 mix socially with others.

• 2 make (someone) behave in a way that is acceptable to society.

• 3 organize according to the principles of socialism.

– derivatives
socialization noun,
socialized adjective,
socializing adjective.