Englishacquaintance
noun
1 Mr. Barnet was no more than a business acquaintance:
contact, associate, connection, ally, colleague;
French confrère.
2 she had prospered from her acquaintance with the sergeant:
association, relationship, contact, social contact;
fellowship, companionship.
3 the critical reader must have some acquaintance with poetry already:
familiarity, conversance, conversancy, contact, acquaintanceship;
knowledge of, experience of, awareness of, understanding of, comprehension of, cognizance of, grasp of;
proficiency in, skill in, expertise in, insight into;
informal know-how.