Why do social groups create and use slang?

Social groups create and use slang primarily to express emotional attitudes, bolster self-image, and promote identification within an in-group. Rather than being the product of single individuals, slang is driven by social forces and conflicts in values, often emerging from subcultures to express hostility, ridicule, or contempt toward the dominant culture.123

Key reasons for the creation and use of slang include:

• Group Solidarity: Occupational and social groups use specialized language to maintain internal cohesion and establish a sense of belonging.2
• Emotional Expression: It provides a vocabulary for shades of meaning not captured by standard language, allowing speakers to convey specific attitudes or feelings.1
• Social Satire and Shock: Slang often relies on the incongruity of imagery to challenge established values or institutions, sometimes acting as a form of social satire.4
• Linguistic Vitality: It serves to freshen and "vitalize" language, providing pungent or picturesque alternatives to common terms.1

Ultimately, slang acts as a revealing index of the social matrix that produces it, reflecting the unique values, techniques, and attitudes of specific populations.245