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words change into ɪkˈspendɪtʃər and ɪnˈvestɪtʃər. In other words, there is a vowel insertion of ɪ before tʃər in each pair.
From the discussion above, the vowel insertion can be summarized into the following phonological notation.
Ø ə C [+voiced, +labiodental] __ [+palatal]
Ø ə C [+nasal, +alveolar] __ [+palatal]
Ø ɪ C [+voiced, +alveolar] __ [+palatal]
3. Vowel Change
Vowel change is similar to consonant change. The difference only lies on the object of the alternation which is vowel. In the process of adding the suffix
{-ure}, there are three bases which are changed. Below are the data. Create kriˈeɪt
creature ˈkriːtʃər Displease dɪsˈpliːz
displeasure dɪsˈpleʒər Please pliːz
pleasure ˈpleʒər Sign saɪn
signature ˈsɪցnətʃər As seen above, there is a phonological change in the vowel of each word
after attached to the suffix {-ure}. Hence, this process is called as vowel change. For instance, the vowel i in the word create kriˈeɪt is changed into iː after
receiving the suffix {-ure} so that creature is pronounced as ˈkriːtʃər. The other alteration is the vowel iː in the words displease dɪsˈpliːz and please
pliːz which are changed into e after receiving the suffix {-ure} so that displeasure and pleasure are pronounced as dɪsˈpleʒər and ˈpleʒər. The last
alteration is the diphthong aɪ in the word sign becomes ɪ so that signature is pronounced as ˈsɪցnətʃər.
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To sum up, vowel change in the words receiving the suffix {-ure} occurs in two conditions. The first is when the vowel i of the base occurs before
the stress then it changes into iː. The second is when a base has a stressed vowel iː occurring before the consonant z and then the iː is changed into e.
From the discussion above, the vowel insertion can be summarized into the following phonological notation.
V [+high, +front, -tense] [+tense] C [+liquid, +alveolar] __
[+palatal] V [+high, +front, +tense]
[+mid, +front, +tense] C [+lateral, +alveoral] __ [+palatal]
aɪ [+high, +front, -tense] C [-voiced, +alveolar] __ [+palatal]
4. Segment Deletion
In contrast to segment insertion, segment deletion is one of the morphophonemic processes which has a function to delete a segment. There are
only one datum which undergo segment deletion. The data can be seen below. Create kriˈeɪt
creature ˈkriːtʃər The alteration of that word shows that there is a segment deletion. As
seen in the first word, the deletion of eɪ in the word create when suffix {-ure} is attached to the suffix {-ure} is obvious. Consequently, the IPA of the word
creature turns into ˈkriːtʃər without eɪ as in its base. From the discussion above, the vowel insertion can be summarized into
the following phonological notation. eɪ
Ø __ [+palatal]
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5. Vowel Reduction
