The phrase "mere acquaintances" refers to people who know each other but are not close or have a deep connection. They are more like casual or distant friends, rather than close companions or intimate associates. Full definition
Healthy communities are comprised of diverse men and women — married and single — some of whom are intimate friends and others mere acquaintances, who want to grow. (relevantmagazine.com)
Reasons for being single are usually not up for discussion with mere acquaintances — they are typically very personal and unique to each person. (relevantmagazine.com)
While this is what helps set apart lasting friendships from mere acquaintances in the social world, at the interview table candidates should strive to give everyone their fair share of the conversation. (blog.simplyhired.com)