1. 
[syn: block, mental block]
WordNet (r) 3.0 (2006):
mental block
    n 1: an inability to remember or think of something you normally
         can do; often caused by emotional tension; "I knew his name
         perfectly well but I had a temporary block" [syn: block,
         mental block]
Moby Thesaurus II by Grady Ward, 1.0:
21 Moby Thesaurus words for "mental block":
   agnosia, block, blocking, conversion, defense mechanism, delirium,
   delusion, delusion of persecution, disorientation, flight of ideas,
   hallucination, hallucinosis, mental confusion, nihilism,
   nihilistic delusion, paralogia, psychological block, repression,
   sublimation, suppression, symbolization