English dictionary

demonstrably

Definitions, examples, synonyms and antonyms from WordNet 3.0.

adverb

in an obvious and provable manner

adv.all

Examples
His documentary sources are demonstrably wrong.

Synonyms incontrovertibly provably

Source: WordNet 3.0
In a demonstrable manner; incontrovertibly; clearly.

adverb

Source: webster1913