Definition of underpin in English:

underpin

Syllabification: un·der·pin
Pronunciation: /ˌəndərˈpin
 
/

verb (underpins, underpinning, underpinned)

[with object]
1Support (a building or other structure) from below by laying a solid foundation below ground level or by substituting stronger for weaker materials.
More example sentences
  • Work began on rectifying the structural problems of the library and extra piles were inserted and the building was underpinned.
  • The claim of the insured included an additional claim to underpin an adjacent office block, which was not part of the insured property.
  • Mrs Lloyd said the council refuses to answer questions about underpinning her house.
1.1Support, justify, or form the basis for: the theme of honor underpinning the two books
More example sentences
  • He said, ‘We are remembering the past, honouring the present and underpinning a legacy for future generations in gathering here today.’
  • We should never lose sight of the fact that it is engagement in a real economy that underpins reciprocity in society.
  • The story of her parents' struggle to raise four children in an alien culture underpins her book and her beliefs.

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Word of the day dinkum
Pronunciation: ˈdɪŋkəm
adjective
(of an article or person) genuine, honest, true