Definition: Colloquial or informal language in the UK, particularly during dinner parties, where people are likely to be chatting about their lives, hobbies or interests. They may use expressions such as "how was your day?", "what did you do last night", "have you seen my new watch?" etc. The word colloquial is a term that describes language used in informal settings and has no direct definition. Colloquialism can also be used to describe the way people speak or talk in informal settings. It refers to expressions of agreement, politeness, or humor with others around them.