Is 三角 pronounced "sangaku" in any dialects? The word is often used in judo to describe a position enclosing your opponent's head and arm in a "triangle" created by interlocking your legs. However this word is occasionally spelled _san **g** aku_ (as opposed to the expected _san **k** aku_): > **37.** Omote-sangaku > **38.** Ashi-sangaku-garami > ... > **45.** Yoko-sangaku > > * _Fighting Judo_ , Katsuhiko Kashiwazaki > Is this just a typo, or an example of rendaku in the author's dialect? i.e. is ever pronounced **** ?

Weblio's hits for don't include , which would suggest that this isn't standard.

Google searches for "" and "" also return zero hits, while searches for "" and "" with the unvoiced return relevant sites.

I see that Kashiwazaki is from Iwate, and I believe that this kind of softening or additional voicing is a feature of dialects in the northeast. I lived in Morioka for a while years ago, and was interested to hear such additional voicing among the speakers there, things like being pronounced as , or a kind of interjectionary particle a bit like or , but realized as .

→ This leads me to think that the pronunciation might be an expression of Kashiwazaki's Iwate-ben.