The glottal stop makes an apostrophic appearance! As in:
Hawai'i
Some Polynesian languages feature the glottal stop. If it is denoted, an apostrophe is used. Although some English speakers pronounce glottal stops in Hawai'ian words, the vast majority do not. Even in the name Hawai'i, it is often omitted.
"The glottal stop or voiceless glottal plosive is a type of consonantal sound, used in many spoken languages. The glottal stop is the sound made when the vocal cords are pressed together to stop the flow of air and then released, and is the sound in the middle of the interjection uh-oh."
Also used in Arabic, Burmese, Czech, Danish, Dutch, Finnish, German, Guaraní, Hebrew, Maltese, Norwegian, Polynesian, Võro.
"Features of the glottal stop:
Its manner of articulation is plosive or stop, which means it is produced by obstructing airflow in the vocal tract.
Its place of articulation is glottal which means it is articulated by the vocal folds.
Its phonation type is voiceless, which means it is produced without vibrations of the vocal cords.
It is an oral consonant, which means air is allowed to escape through the mouth.
Because it is pronounced in the throat; without a component in the mouth, the central/lateral dichotomy does not apply.
The airstream mechanism is pulmonic egressive, which means it is articulated by pushing air out of the lungs and through the vocal tract, rather than from the glottis or the mouth."
"There are few words in English that universally contain a glottal stop. The best known examples are the interjections "uh-oh" and "uh-uh". The p in "yep" and "nope" for yes and no may have originally represented glottal stops, but the words are now typically read with a [p]."
http://en.wikipedia.org/wiki/Glottal_stop
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