What is the Meaning of Underpin?
According to the Global Language Monitor, there are 1,001,543 words in the English language. Keeping this statistic in mind, it is no wonder that some words are not used as often as their simpler synonyms. The word underpin is an example of this trend. The word in itself is easy to define and just as easy to understand, especially when you recognize its compound nature. Underpin has two very similar meanings that can be applied in several different ways; and although underpin may not be used regularly in conversation, its synonyms are.
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Function
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The word underpin functions as a transitive verb. A transitive verb operates much like a regular verb in their mutual categorization as words denoting action. The difference lies in the concept that a transitive verb requires a direct object to be complete. Consequently, the word underpin must be coupled with another word within a sentence to produce a complete thought.
Features
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Underpin is a compound word, a combination of the words under and pin. According to the Merriam-Webster Online Dictionary, the word under, in regard to its usage in underpin, is to be "in or (put) into a position below or beneath something."
The word pin has many different definitions. However, when it is used in underpin, it functions as a transitive verb in itself and lends that designation to the compound word. According to the Merriam-Webster Online Dictionary, the word pin means "to fasten, join or secure" or to "hold (something) fast or immobile."
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Meaning
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By combining the features of the individual words that comprise the compound word underpin, one is able to arrive at a comprehensive meaning. According to the Merriam-Webster Online Dictionary, the word underpin has two similar, but separate meanings. The first definition of underpin refers to the act of "support(ing) or substantiat(ing)" something, most likely in terms of an idea or a supposition. The second definition is "to form part of, strengthen or replace the foundation" of something, most likely a physical entity.
Examples
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Following are some examples of usage of the word underpin. In regard to the word's first definition, underpin is to be used in reference to backing up a claim, idea, hypothesis or similar concept. One could use the word in a sentence such as: "Anna underpinned the theory in her science fair project with considerable data."
In regard to the word's second definition, underpin refers directly to the support of a physical thing, such as a structure. A sample sentence could be: "Concrete joists currently underpin the foundation of the library."
Considerations
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The word underpin can also be used in its present participle form of underpinning, which functions as a noun. The definition between underpin and underpinning differ slightly because while underpin is the action of supporting something, an underpinning is the thing that supports.
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