Definition of "underpinned" []

• Simple past tense and past participle of underpin. (verb)

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• "Mr. Wolf sees 11,700 on the TSX, so another year of relative out-performance and roughly a 6-per-cent total return, and again underpinned by our overexposure to resource stocks, especially the metals."
• "Payton, the self-effacing head coach whose calls underpinned a courageous Saints comeback from 10-0 down in the first quarter, was a man out of inspiration by the time he hoisted the Vince Lombardi Trophy aloft."
• "Chinese environmentalists describe it as a model of Taoist eco-engineering.10 Historians believe this huge irrigation and flood-control project created the conditions for the unification of China by reducing floods and ensuring sufficient food surpluses to fund a strong army for the Qin emperor.11 The subsequent political system in which subjects had to pay tributes to the emperor by boating them along tributaries hence the name is underpinned by the river-centered philosophy that partly originated here.12"