[1] : The Collaborative International Dictionary of English v.0.48

abysmal \abys"mal\, a.
   pertaining to, or resembling, an abyss; bottomless; unending;
   profound.
   1913 webster

         geology gives one the same abysmal extent of time that
         astronomy does of space.                 --carlyle.
   1913 webster

[2] : WordNet (r) 2.0

abysmal
     adj 1: very great; limitless; "abysmal misery"; "abysmal stupidity"
     2: so deep as to be unmeasurable; "the abyssal depths of the
        ocean" syn: abyssal, unfathomable
see also:
abyssal unfathomable 

[3] : Moby Thesaurus II by Grady Ward, 1.0

51 moby thesaurus words for "abysmal":
   atlantean, brobdingnagian, cyclopean, gargantuan, herculean,
   homeric, abyssal, appalling, astronomic, awful, bottomless,
   cavernous, colossal, deep as hell, dreadful, elephantine, enormous,
   epic, fathomless, gaping, giant, giantlike, gigantic, heroic, huge,
   illimitable, immense, infinite, jumbo, mammoth, mighty, monster,
   monstrous, monumental, mountainous, plumbless, plunging,
   prodigious, profound, soundless, stupendous, terrible, titanic,
   towering, tremendous, unfathomable, unfathomed, unsounded, vast,
   without bottom, yawning

Abysmal >> A Words
Abysmal, definition of term: Abysmal
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