Standard Lemma guide

demonstrably

adv · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /dɪˈmɒnstrəbliː/
  • US: /diˈmɑnstrəbli/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: D IH0 M AA1 N S T R AH0 B L IY0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adv

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Examples

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

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adverb

Meaning 2

in an obvious and provable manner

Definition source: Princeton WordNet 3.0

Examples

  • his documentary sources are demonstrably wrong

Meaning relationships

Synonyms: provably, incontrovertibly

Antonyms: none provided

History

Etymology

Etymology tree English demonstrable Proto-Indo-European *leyg-der. Proto-Germanic *līkąder. Proto-Germanic *-līkaz Proto-Germanic *-ê Proto-Germanic *-līkê Proto-West Germanic *-līkē Old English -līċe Middle English -ly English -ly English demonstrably From demonstrable + -ly. First attested in the early 17th century.

Across languages

Translations

6 source translations are retained for this English entry.

  • Danish: bevislig — in such a manner as to be capable of being demonstrated
  • Danish: bevisligt — in such a manner as to be capable of being demonstrated
  • Finnish: osoitettavasti — in such a manner as to be capable of being demonstrated
  • French: démontrablement — in such a manner as to be capable of being demonstrated
  • Polish: wykazalnie — in such a manner as to be capable of being demonstrated
  • Portuguese: demonstravelmente — in such a manner as to be capable of being demonstrated