Demonstrably

//diˈmɑnstrəbli// adv

adv ·Uncommon ·Advanced level

Definitions

Adverb
  1. 1
    In such a manner that is capable of being demonstrated, shown, or proved (without doubt).

    "The country has become demonstrably less safe under his leadership."

Adverb
  1. 1
    in an obvious and provable manner wordnet

Synonyms

All synonyms
actuallyascertainedlyassuredlyattestablyattestablycertainly

Example

More examples

"As liberty of thought is absolute, so is liberty of speech, which is "inseparable" from the liberty of thought. Liberty of speech, moreover, is essential not only for its own sake but for the sake of truth, which requires absolute liberty for the utterance of unpopular and even demonstrably false opinions."

Etymology

From demonstrable + -ly. First attested in the early 17th century.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.