Standard Lemma guide

undistinguishable

adj · 3 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

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  • UK: /ˌʌndɪˈstɪŋɡwɪʃəb(ə)l/

1

adj

Meaning 1

Imperceptible; indistinct.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Indistinguishable.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adjective

Meaning 3

not capable of being distinguished or differentiated

Definition source: Princeton WordNet 3.0

Examples

  • the two specimens are actually different from each other but the differences are almost indistinguishable
  • the twins were indistinguishable
  • a colorless person quite indistinguishable from the colorless mass of humanity

Meaning relationships

Synonyms: indistinguishable

Antonyms: none provided

History

Etymology

Etymology tree English un- English distinguish Proto-Indo-European *-tḗr Proto-Indo-European *-dhlom Proto-Indo-European *-dhlis Proto-Italic *-ðlis Latin -bilis Latin -ābilis Old French -ablebor. Middle English -able English -able English distinguishable English undistinguishable From un- + distinguishable.