There are three main processes by which the consonant lenis
completely, or almost completely:
(1) /b, d, g, dʒ, v, ð, z, ʒ/. The vibration of the vocal folds
generally diminishes at the end of speaking. As in Cab[kæb],
Lid[lɪd], Bag[bæg], Judge[ˈʤʌʤ], Leave[liːv], Breathe[briːð],
Freeze[friːz], and Rouge[ruːʒ]
(2) /l, r,°w/. The lenis lateral and these two lenis approximants
can be fully devoiced when they follow any one of the fortis
plosives, /p, t, k/, in stressed syllables, as in please [pliːz] , try
[traɪ], and quick [kwɪk].
(3) /j/. This lenis approximant can be fully devoiced when it
follows any one of the fortis plosives, /p, t, k/, or the fortis
glottal fricative, /h/, in stressed syllables. As in [pçu:] for pew,
[tçu:n] for tune, [kçu:b] for cube, and [hçu:] for hue. Since the
symbol [ç] already indicates voicelessness.