Imponderable

//ɪmˈpɒndəɹəbl// adj, noun

adj, noun ·Moderate ·College level

Definitions

Noun
  1. 1
    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.
  2. 2
    a factor whose effects cannot be accurately assessed wordnet
  3. 3
    An imponderable question.
  4. 4
    A factor that cannot be anticipated.

    "One key imponderable is the attitude of the companies that will no longer have a role in the business. It is worth noting here that several have already thrown the towel in or been gently pushed out, such as Stagecoach and National Express."

Adjective
  1. 1
    Not ponderable; without sensible or appreciable weight; incapable of being weighed.
  2. 2
    Difficult or impossible to comprehend or evaluate.
Adjective
  1. 1
    difficult or impossible to evaluate with precision wordnet

Synonyms

All synonyms
aerialairyasomatousastralatomicbodiless

Example

More examples

"It is often hard to adapt when confronted with an imponderable event."

Etymology

From im- + ponderable.

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