nói ngọng

Verb

 * 1)  to have a "speech impediment" where one has difficulty in articulating certain phoneme(s) that is/are not native to their dialect, most stereotypically associated with those who have the - merger or switch

Usage notes

 * This pseudolinguistic term is often utilized to indicate those with the - mergers or switch (either to or to, or the switch in phonetic values between the two phonemes) in certain regions of Northern Vietnam, which is heavily stigmatized by other speakers (Northerners or not) who do not have these particular mergers or switch, and by the speakers themselves. However, it is also used to refer to other sound shifts.