Ingratiation is a psychological technique in which an individual attempts to influence, manipulate or control another by becoming more attractive or likeable to their target. This term was coined by social psychologist Edward E. Jones. This outcome can be achieved by using several methods:
unofficial. Unofficial is the phrase commonly used to describe the Friday prior to St. Patrick's day at The University of Illinois. The holiday began when students realized St. Patrick's Day was falling on spring break and they would not be able to celebrate it.
It is also associated with official norms. Formal and informal are antonyms to each other. Formal defines an official style or manner. On the other hand, informal can be associated with a casual or a friendly manner. Thus, anything that is associated with the 'formal' attribute is regarded to be in accordance to certain rules and regulations or based on a standard format. Informal is just the opposite of formal. Something that is informal need not follow rules or regulations.