Word Study
indefinable
CIDE DICTIONARY
indefinable, a.
Incapable of being defined or described; inexplicable. Bp. Reynolds. [1913 Webster]
OXFORD DICTIONARY
indefinable, adj. that cannot be defined or exactly described.
Derivative
indefinably adv.
THESAURUS
indefinable
aleatoric, aleatory, amorphous, blobby, blurred, blurry, broad, chance, chancy, chaotic, confused, disordered, enwrapped in mystery, foggy, fuzzy, general, hazy, hit-or-miss, ill-defined, imprecise, inaccurate, inchoate, incoherent, incommunicable, indecisive, indefinite, indescribable, indeterminable, indeterminate, indistinct, ineffable, inenarrable, inexact, inexplicable, inexpressible, inextricable, innominable, insoluble, insolvable, lax, loose, mysterious, mystic, noncommunicable, nonspecific, obscure, orderless, random, shadowed forth, shadowy, shapeless, stochastic, sweeping, unaccountable, unclear, undefinable, undefined, undestined, undetermined, unexplainable, uninterpretable, unmentionable, unnameable, unplain, unsolvable, unspeakable, unspecified, untellable, unutterable, unwhisperable, vague, veiledFor further exploring for "indefinable" in Webster Dictionary Online