Published online by Cambridge University Press: 12 September 2008
In certain varieties of English, and most notably in the majority of North American dialects, alveolar oral and nasal stops undergo a process known as Flapping or Tapping in certain well-defined environments. At the present time, the resulting segments [ɾ] and [ɾ̃] cannot be satisfactorily captured by any known phonetic feature mainly because there is no way to distinguish a nasal stop from a nasal tap or flap. In this paper, I will argue that since vibration is the primary articulatory characteristic of taps, flaps and trills, the phonological rule of Flapping or Tapping constitutes evidence that [vibrant] should be added to the current inventory of features.