120 Cognitive Exploration of Language and Linguistics
dogs [df:z], bees [biz]. Further examples of progressive assimilation are the
devoicing of the normally voiced [l, r] when these sounds occur after a voiceless
consonant in a syllable-initial cluster: please, pray [p®liz, p®rei].
Retrogressive assimilations are frequent in English. News has a final voiced
[z]. Yet in newspaper voiceless [p] causes preceding [z] to become [s]:
[njuspeip6].
The above examples illustrate voicing assimilation, i.e. the voice/
voicelessness of a segment “spreads” into a neighbouring segment.
Place assimilation is when the place of articulation of a consonant spreads
into a neighbouring consonant. Retrogressive place assimilation is frequent in
English. Thus, good boy may be spoken as [:~bbfi], good girl as [:~: :8l]. The
nasal in the negative prefixes un- and in- often assimilates to the place of
articulation of a following consonant. In unbelievable the negative prefix is
followed by a bilabial, and may be pronounced [6m], while in unconscious it is
followed by a velar, and may be pronounced [6]]. In unfavourable one might
get the labiodental nasal [X].
Nasal assimilation occurs when one segment takes on the nasality of a neigh-
bouring segment. Vowels often nasalize before a nasal consonant: can’t [kãnt].
Assimilation can be total, i.e. a sound can become identical to its neighbour.
By retrogressive voicing assimilation, is Sam [Iz sæm] becomes [Is sæm].
Some assimilations (e.g. the devoicing of /z/ in newspaper) are obligatory
within word boundaries, often, however, they are optional, and tend to be more
frequent the more informal and relaxed the speaking style.
Assimilation can sometimes appear to change the phonemic structure of a
word. In the example good boy, the final [d] of good is changed to [b], i.e. an
allophone of the /d/ phoneme has been replaced by an allophone of a different
phoneme, i.e. /b/. In other cases, assimilation replaces one allophone of a
phoneme by another allophone of the same phoneme, as when the [l] of play
becomes voiceless. Although we cannot pursue this matter here, facts of this
nature have led some linguists to question the theoretical status of the pho-
neme, as traditionally defined. For example, given that comfort is pronounced
[k%Xf6t], and that the use of [X
] represents place assimilation to the following
[f
],
to which phoneme should [X] be assigned, to /m/ or to /n/?
5.7.4
Palatalization
Palatalization is a rather common process in which the palatal glide [j] causes
a preceding obstruent to be articulated in the palatal region.