Standard Lemma guide

imponderable

adj · noun · 7 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.

  • Received-Pronunciation: /ɪmˈpɒndəɹəbl/
  • US: /ɪmˈpɑːndəɹəbl/
  • Midwestern-US: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: IH2 M P AA1 N D ER0 AH0 B AH0 L Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Not ponderable; without sensible or appreciable weight; incapable of being weighed.

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

Difficult or impossible to comprehend or evaluate.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A substance or body, which is not ponderable, i.e., which not does not having a detectable amount of matter or measurable mass. An imponderable substance or body; specifically, in the plural, a name formerly applied to heat, light, electricity, and magnetism.

Definition source: English Wiktionary via Wiktextract

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

An imponderable question.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A factor that cannot be anticipated.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

adjective

Meaning 6

difficult or impossible to evaluate with precision

Definition source: Princeton WordNet 3.0

Examples

  • such imponderable human factors as aesthetic sensibility

Meaning relationships

Synonyms: none provided

Antonyms: ponderable

7

noun

Meaning 7

a factor whose effects cannot be accurately assessed

Definition source: Princeton WordNet 3.0

Examples

  • human behavior depends on many imponderables

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: influence

Narrower terms: leaven, leavening

History

Etymology

Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English im- English ponder 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 ponderable English imponderable From im- + ponderable.

Across languages

Translations

10 source translations are retained for this English entry.

  • Catalan: imponderable — not ponderable; without sensible or appreciable weight
  • German: unwägbar — not ponderable; without sensible or appreciable weight
  • Greek: αστάθμητος (astáthmitos) — not ponderable; without sensible or appreciable weight
  • Russian: невесо́мый (nevesómyj) — not ponderable; without sensible or appreciable weight
  • Spanish: imponderable — not ponderable; without sensible or appreciable weight
  • Ukrainian: неваго́мий (nevahómyj) — not ponderable; without sensible or appreciable weight
  • German: unwägbar — difficult or impossible to comprehend
  • German: unberechenbar — difficult or impossible to comprehend
  • German: unkalkulierbar — difficult or impossible to comprehend
  • Greek: αστάθμητος (astáthmitos) — difficult or impossible to comprehend