figment

from WordNet (r) 3.0 (2006)
figment
    n 1: a contrived or fantastic idea; "a figment of the
         imagination"
    
from The Collaborative International Dictionary of English v.0.48
Figment \Fig"ment\, n. [L. figmentum, fr. fingere to form,
   shape, invent, feign. See {Feign}.]
   An invention; a fiction; something feigned or imagined.
   [1913 Webster]

         Social figments, feints, and formalism.  --Mrs.
                                                  Browning.
   [1913 Webster]

         It carried rather an appearance of figment and
         invention . . . than of truth and reality. --Woodward.
   [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
42 Moby Thesaurus words for "figment":
      apparition, brainchild, bubble, canard, chimera, concoction,
      creation, daydream, delirium, dream, eidolon, extravaganza, fable,
      fabrication, fancy, fantasque, fantasy, fiction, forgery,
      hallucination, idle fancy, illusion, imagery, imagination,
      imagining, insubstantial image, invention, maggot, make-believe,
      myth, nightmare, phantasm, phantom, romance, sick fancy,
      thick-coming fancies, trip, vapor, vision, whim, whimsy,
      wildest dreams

    

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