imponderable

 
Pronunciation: /ɪmˈpɒnd(ə)rəb(ə)l/

noun

  • a factor that is difficult or impossible to estimate or assess: there are too many imponderables for an overall prediction

adjective

  • 1difficult or impossible to estimate or assess: imponderable longer-term prospects
  • 2 archaic very light.

Derivatives

imponderability

Pronunciation: /-ˈbɪlɪti/
noun

imponderably

adverb