demonstrable
If you can demonstrate to me how something works, then it must be demonstrable. You might think that word should be "demonstratable," but you'd be wrong — that word doesn't exist.
Who can say why some words change a little when we change their part of speech. They just do. The verb demonstrate means to show or instruct. The adjective shortens the root to become demonstrable. The steps for buckling a seatbelt must be easily demonstrable, or people will go flying all over the cabin. Demonstrable is often used to refer to the truth of something: if something isn't demonstrable, then we can't really say that it exists, can we?
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capable of being demonstrated or proved
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necessarily or demonstrably true
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Vocabulary lists containing demonstrable
The top 1,000 vocabulary words have been carefully chosen to represent difficult but common words that appear in everyday academic and business writing. These words are also the most likely to appear on the SAT, ACT, GRE, and ToEFL. To create this list, we started with the words that give our users the most trouble and then ranked them by how frequently they appear in our corpus of billions of words from edited sources. If you only have time to study one list of words, this is the list.
The suffix -able means "able to be." All of the words on this list are learnable — so go to it!
President Obama delivered his farewell address on January 10, 2017. The speech detailed what President Obama holds to be the core components that make up American democracy and outlined what he considers to be the continuing threats, located both home and abroad. It was also a speech rich in gratitude, both personal and professional, as President Obama prepares to leave office on January 20, 2017. Here are 28 vocabulary words from the speech.