mental_block
1. [ noun ] an inability to remember or think of something you normally can do; often caused by emotional tension
Synonyms: block
Examples:

"I knew his name perfectly well but I had a temporary block"

Related terms: inability writer's_block forget
Similar spelling:   mental_object
  mental_age
  mental_process
  mental_lexicon
  mental_faculty
  mental_balance
  mental_test
  mental_note
  mental_home
  mental_case
  mental_capacity
  mental_state
  mental_image