👉 The term "uncolloquial" is a phrase that refers to language or communication that lacks precision, colloquialism or slang. It describes a style of speech or expression that is not entirely formal or precise and instead uses everyday language in an informal or conversational manner. Uncolloquial language often includes expressions that are less sophisticated than those used in more formal contexts, such as slang words and terms commonly used by people who do not belong to any particular language group.