Where this custom of maintaining a respectful distance between certain relatives occurs, there is also frequently associated with it a directly contrary relation of familiarity, usually called a ‘joking relationship’. Thus, a man might have an avoidance relationship with his wife's parents, but a joking relationship with her brothers and sisters.
"avoidance relationships." A Dictionary of Sociology. . Encyclopedia.com. (October 15, 2018). http://www.encyclopedia.com/social-sciences/dictionaries-thesauruses-pictures-and-press-releases/avoidance-relationships
"avoidance relationships." A Dictionary of Sociology. . Retrieved October 15, 2018 from Encyclopedia.com: http://www.encyclopedia.com/social-sciences/dictionaries-thesauruses-pictures-and-press-releases/avoidance-relationships