Underpin

Tom needs to underpin his house as it's subsiding.

Mutual respect must underpin any healthy society.

You should underpin the mine roof to prevent further collapse.

Public confidence in politicians must underpin our democracy.

Since Rupert Murdoch famously bet the farm on Premier League football to rescue Sky TV in 1991, it has been the catnip that has underpinned subscriber loyalty and, even in a far more complicated media landscape, is seen as so vital as to be worth almost any price.

The operator said the results were underpinned by a 16% increase in Q3 sales from North America.