demonstrable
Americanadjective
-
capable of being demonstrated or proved.
-
clearly evident; obvious.
a demonstrable lack of concern for the general welfare.
adjective
Other Word Forms
Etymology
Origin of demonstrable
First recorded in 1350–1400; Middle English, from Old French, from Late Latin dēmonstrābilis, equivalent to Latin dēmonstrā(re) ( see demonstrate) + -bilis -ble
Explanation
If something is demonstrable, it can be shown or proven to be true, making it clear to anyone who looks at the evidence. The adjective demonstrable comes from the verb demonstrate, which means "to establish the validity of something" or "to provide evidence for." If a lawyer in court states that it's a demonstrable fact that a defendant behaved with negligence, it means that they can prove it with hard facts. If a medical researcher states that an experimental treatment had a demonstrable effect on survival rates, it means that the data support its effectiveness. Simply put: Anything that is demonstrable can be demonstrated.
Vocabulary lists containing demonstrable
The Vocabulary.com Top 1000
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Power Suffix: -able
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President Obama's Farewell Address
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
This was because of "South Africa's failure to make demonstrable progress on policy requests by the administration", the official said.
From BBC ● Jun. 19, 2026
Presenters will instead emphasize their ability to generate demonstrable results, MacDermid said.
From The Wall Street Journal ● May 10, 2026
The attacks against AI figureheads have no demonstrable ties to one another, nor do they claim affiliation with any shared organization.
From Barron's ● Apr. 29, 2026
So why are we accepting a prior authorization system that causes demonstrable harm?
From MarketWatch ● Apr. 22, 2026
While hardly true, this explanation had the demonstrable advantage of permitting Jefferson’s vision of a Federalist conspiracy to congeal in a plausible pattern that formed around Washington without touching him directly.
From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
