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
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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
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