A loss of the ability to express oneself using organized syntax(noun)
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Use "acataphasia" in a sentence
"Agrammatism in child-language always appears in company with acataphasia, often also in insane persons."
"_ -- Many children, long after they have overcome acataphasia and agrammatism, delight in inserting between words sounds, syllables, and words that do not belong there; e. g., they double the last syllable of every word and put an _eff_ to it: _ich-ich-eff_, _bin in-eff_, etc., or they make a kind of bleat between the words"