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demonstrably

American  
[dih-mon-struh-blee] / dɪˈmɒn strə bli /

adverb

  1. in a way that can be demonstrated or proved.

    Privatization may be good for the government contractors who profit, but it's demonstrably less efficient in sectors like health care.

  2. very evidently; obviously.

    Earlier in the game, the wide receiver was demonstrably agitated about not getting the ball enough.


Other Word Forms

  • nondemonstrably adverb
  • undemonstrably adverb

Etymology

Origin of demonstrably

demonstrab(le) ( def. ) + -ly

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.

A lawyer for Oren said the lawsuit was salacious and demonstrably false.

From The Wall Street Journal • Mar. 9, 2026

Tarryn Baird was making "demonstrably false allegations to health professionals" about Christopher Trybus before her death in November 2017, his defence barrister said.

From BBC • Feb. 25, 2026

AppLovin sent a cease-and-desist letter and said the claims were “absurd and demonstrably false.”

From Barron's • Feb. 20, 2026

On Thursday, he said that what ICE provided was “preposterous,” “rank hearsay,” “evasive and demonstrably false,” and filled with “material misstatements.”

From Slate • Dec. 20, 2025

As Bolles continued, Joe clenched his fist at his side and gave it a subtle little pump, unwilling to celebrate any more demonstrably than that in front of the boys who had not been selected.

From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown