Datapoint Norf'k/z - voiced dental/alveolar sibilant fricative

[z] is encountered in some words in free variation with [s] (e.g. sip, zip ‘a zip’) but there is no phonemic contrast. All the words with initial z in Buffett’s ‘Encyclopedia’ are peripheral.

Values

Exists only in loanwords

Example 24-226:
sip, zip
a zip