It is an established fact that language is the chief distinctive feature of humans.rnUnfortunately, there are a number of individuals missing usage of language and/or speechrnpartially or entirely, from the beginning or lately, momentarily or for a long time, usuallyrnfor defined reasons or for reasons which cannot yet be explained. This work particularlyrnattempts to investigate the extent of abnormality of the speech of an individual withrnFlaccid Dysarthria. The subject was diagnosed as a Primary Lateral Sclerosis patient,rnwhich is a progressive degenerative motorneuron disease, that is, nerve cells in the bodyrngradually die off. It affects only some of the nerve cells in the body--those that controlrnvoluntary movement of muscles. The main objective of this study is to acousticallyrnanalyze the patientâ€™s vowels, consonants, intonation contours and duration.rnAcoustic methods were employed to examine the speech of the patient. More specifically,rnthe data were from solicitation and spontaneous utterances of the subject. They wererndigitally recorded, sampled and quantized, then fed into a speech analyzer software calledrnPraat. The interpretations of the data were done on the basis of the facts revealed by thernsoftware.rnAccordingly, the patientâ€™s vowels were found to be confined to the center of his oralrncavity and have a hypernasal quality. The qualities of his consonants also showed howrnthe problem is serious. Most of the consonants are so distorted that it is difficult tornidentify them on spectrograms. The suprasegmental aspects of his utterances also exhibitrndeviant patterns. Hence, the patientâ€™s speech lacks intelligibility.