socialize
v.to spend time with other people for fun. You do this when you go to parties, meet friends for coffee, or talk to neighbors.
v.to participate in social activities or mix socially with others. Often implies the development of interpersonal relationships or the maintenance of a social network.
“I like to socialize with my coworkers after the office closes.”
“It is important for new students to socialize during the first week of university to build a support group.”
“While some people find it exhausting to socialize in large groups, others thrive on the energy of crowded events and constant interpersonal interaction.”
The verb is intransitive when meaning to mix with others, often taking the preposition 'with'.
When meaning to spend time together, the verb is intransitive and requires the preposition 'with'.
From social + -ize.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.