Over-decoration refers to excessive and unnecessary embellishment that disrupts the balance and coherence of a space or object. Synonyms for over-decoration include garishness, gaudiness, flamboyance, ostentation, excess, extravagance, and opulence. Garishness implies a tasteless or overly bright use of colors and patterns. Gaudiness suggests an excessive use of decorations without regard to elegance or restraint. Flamboyance refers to an extravagantly decorative style, often associated with art nouveau or baroque architecture. Ostentation implies an unnecessary display of wealth or taste. Excess generally refers to any kind of overindulgence or overabundance. Extravagance refers to an excessive use of luxurious or expensive materials. Opulence suggests a lavish or ornate style associated with wealth and luxury.