labialism

noun
la·​bi·​al·​ism | \ ˈlā-bē-ə-ˌliz-əm How to pronounce labialism (audio) \

Medical Definition of labialism

: a speech defect characterized by the substitution of one labial sound for another or of a labial for another type of sound

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grandiloquent, ostentatious, or bombastic

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