Pronunciation: (dek'u-rāt"),[key] —v.t.,-rat•ed, -rat•ing. 1. to furnish or adorn with something ornamental or becoming; embellish: to decorate walls with murals. 2. to plan and execute the design, furnishings, and ornamentation of the interior of (a house, office, apartment, etc.), esp. by selecting colors, fabrics, and style of furniture, by making minor structural changes, etc.: Their house is decorated in French Provincial style. 3. to confer distinction upon by a badge, a medal of honor, etc.: to decorate a soldier for valor.