inapprehensible
41recondite — I adjective abstract, abstruse, arcane, cabalistic, complex, complicated, concealed, convoluted, covert, crabbed, cryptic, cryptical, dark, deep, difficult, elusive, enigmatic, esoteric, exquisitus, hidden, impenetrable, imperspicuous, intricate …
42unaccountable — index arbitrary, clear (unencumbered), immune, inapprehensible, incomprehensible, indefinable, inexplicable …
43undecipherable — index complex, inapprehensible, indistinct, inexplicable, inexpressive Burton s Legal Thesaurus. William C. Burton. 2006 …
44undefinable — I adjective esoteric, indefinable, indescribable, indeterminate, indistinct, ineffable, inexplicable, inexpressible, unexplainable, untranslatable, vague II index inapprehensible, ineffable Burton s Legal Thesaurus. W …
45undiscoverable — index inapprehensible, indiscernible, inexplicable, inscrutable Burton s Legal Thesaurus. William C. Burton. 2006 …
46unexplainable — index inapprehensible, inexplicable, mysterious, undefinable Burton s Legal Thesaurus. William C. Burton. 2006 …
47unfathomable — index complex, inapprehensible, inarticulate, incomprehensible, indefinable, indeterminate, inexpressive, innumerable …
48unintelligible — index ambiguous, disconnected, equivocal, inapprehensible, inarticulate, incomprehensible, indefinite, indistinct …
49unknowable — index inapprehensible, incomprehensible, inexplicable, inscrutable Burton s Legal Thesaurus. William C. Burton. 2006 …
50unreadable — index inapprehensible, pedestrian, unclear Burton s Legal Thesaurus. William C. Burton. 2006 …
