Wordnet 3.0
NOUN (1)
1.
a factor whose effects cannot be accurately assessed;
- Example: "human behavior depends on many imponderables"ADJECTIVE (1)
1.
difficult or impossible to evaluate with precision;
- Example: "such imponderable human factors as aesthetic sensibility"
The Collaborative International Dictionary of English v.0.48:
Imponderable \Im*pon"der*a*ble\, a. [Pref. im- not + ponderable:
cf. F. impond['e]rable.]
Not ponderable; without sensible or appreciable weight;
incapable of being weighed.
[1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Imponderable \Im*pon"der*a*ble\, n. (Physics)
An imponderable substance or body; specifically, in the
plural, a name formerly applied to heat, light, electricity,
and magnetism, regarded as subtile fluids destitute of weight
but in modern science little used.
[1913 Webster]
WordNet (r) 3.0 (2006):
imponderable
adj 1: difficult or impossible to evaluate with precision; "such
imponderable human factors as aesthetic sensibility"
[ant: ponderable]
n 1: a factor whose effects cannot be accurately assessed;
"human behavior depends on many imponderables"
Moby Thesaurus II by Grady Ward, 1.0:
69 Moby Thesaurus words for "imponderable":
airy, asomatous, astral, atomic, bodiless, corpuscular, decarnate,
decarnated, discarnate, disembodied, embryonic, ethereal,
evanescent, extramundane, germinal, ghostly, granular, immaterial,
impalpable, imperceptible, inappreciable, incomprehensible,
inconceivable, incorporate, incorporeal, indiscernible,
inestimable, infinitesimal, insensible, insubstantial, intangible,
invisible, microcosmic, microscopic, molecular, nonmaterial,
nonphysical, nonsubstantial, occult, otherworldly, phantom,
psychic, shadowy, spiritual, subatomic, subtle, supernatural,
tenuous, thin, transmundane, ultramicroscopic, unapparent,
unappreciable, unconcrete, unearthly, unembodied, unextended,
unfleshly, unmeasurable, unobservable, unperceivable, unphysical,
unseeable, unsolid, unsubstanced, unsubstantial, unweighable,
unworldly, weightless