Synonyms and related words :
anaudia, aphonia, aphrasia, deaf-muteness, dumbness, dysarthria, dysphasia, echolalia, hysterical aphonia, imperfect speech, inarticulateness, incoherence, jargon aphasia, loss of speech, motor aphasia, muteness, mutism, paranomia, paraphasia, psychophonasthenia, speech defect, speechlessness, tonguelessness, verbigeration, voicelessness, wordlessness