I've always like the word Kwakiutl, even though it is now deprecated (see below). The 'tl' digraph represents a voiceless aspirated lateral stop, which sort of sounds like /tl/. A related sound is the 'll' digraph of Catalan or Welsh, which is a voicelesslateral fricative.

We have been called the Kwakiutl ever since 1849, when the white people came to stay in our territories. In fact, the Kwakiutl only occupy the village now called Fort Rupert. The rest of us have our own names and our own villages. For example, the Gwawa'enuxw live at Hopetown. Collectively, we call ourselves the Kwakwaka'wakw--that is, all of the people who speak the language Kwakwala.

http://college.hmco.com/history/readerscomp/naind/html/na_019100_kwakiutl.htm

Also spelled Kwak'wala (with ejective or glottalized labio-velar). There are about 200 speakers left.