demonstrably

[ dih-mon-struh-blee ]

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 Words From

• non·de·mon·stra·bly adverb
• un·de·mon·stra·bly adverb

Word History and Origins

Origin of demonstrably¹

demonstrab(le) ( def ) + -ly

Example Sentences

Readers learn in sometimes fulsome detail about the limits of “heroic medicine” — the delivery of treatments that had demonstrable effects.

From Washington Post

ESPN reported the dip had a “demonstrable effect” on his free agent market before he landed with the Nationals.

From Washington Post

It has demonstrable physiological and psychological benefits, they tell you.

From Freakonomics

For media sellers, a finely tuned attention metric helps give more demonstrable value to programming as those ratings fall.

From Digiday

The second one would be achieving demonstrable social benefit.

From MIT Technology Review

When Panetta became CIA director in 2009, he was demonstrably unqualified for the job.

From The Daily Beast

In Hungary, the demonstrably anti-Semitic Jobbik party finished second.

From The Daily Beast

But they are medical providers in their own right, ones who can demonstrably provide quality care.

From The Daily Beast

He is demonstrably someone willing to invest for the long term.

From The Daily Beast

But confronting the myriad problems that plague the region could be made demonstrably less difficult.

From The Daily Beast

I select it merely as an example of a demonstrably vicious locution which ought indubitably to be banished from the language.

From Project Gutenberg

All these qualities serve some well-defined and demonstrably useful end.

From Project Gutenberg

Such an occurrence can be evidential only when the hair changes color demonstrably in the case of a witness.

From Project Gutenberg

But the a priori assumption that each Germanic tribe celebrated in song its own national heroes only is demonstrably incorrect.

From Project Gutenberg

Enough for proud philosophy to have done the thing demonstrably right, Gower's look at his Madge and the world said.

From Project Gutenberg