Underpin in a Sentence 

Definition of Underpin  

support and reinforce

Examples of Underpin in a sentence

To make a good grade, the teacher required her students to underpin their essays with facts to convince the reader about their main ideas.  
To make sure that the mobile home was sturdy, the contractor would underpin the substructure with a secure foundation.  
Even rookie lawyers know that to sway a jury, they need to underpin their thoughts with direct evidence.  

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