资料来源 : Webster's Revised Unabridged Dictionary (1913)

Heterophemy \Het`er*oph"e*my\, n. [Hetero- + Gr. ? voice,
   speech, fr. ? to speak.]
   The unconscious saying, in speech or in writing, of that
   which one does not intend to say; -- frequently the very
   reverse of the thought which is present to consciousness.