paragraphia
/ˌparəˈɡrafɪə/Medicine
noun
The substitution in written language of one word, syllable, or letter for another, usually as a sign of aphasia; an instance or example of this.
Origin
Late 19th century. From para- + ancient Greek -γραϕία -graphy, after German Paragraphie. Compare paralexia, paraphasia, and also earlier agraphia.