paraphasia par·a·pha·sia (pār'ə-fā'zhə) or par·a·phra·si·a (-frā'zē-ə, -zhə)
n.
Aphasia in which one loses the power of speaking correctly, substitutes one word for another, and jumbles words and sentences in such a way as to make speech unintelligible. Also called paragrammatism.