dyslalia Syllabification: (dys·la·li·a)Pronunciation: /disˈlālēə/Definition of dyslalia noun Medicine inability to articulate comprehensible speech, especially when associated with the use of private words or sounds. Origin: mid 19th century: from dys- 'difficult' + Greek lalia 'speech'dyslalia in other Oxford dictionaries Definition of dyslalia in the British & World English dictionary