The "th" sound

[Odessa Dawn]

​

farther /frr/
further /frr/

farther/ˈfɑr·ðər/
further/ˈfɜr·ðər/

We have in dictionaries voiced th while here it is being pronounced as voiceless th? It is at ( 08:09).
​

 

[5jj]

We have in dictionaries voiced th while here it is being pronounced as voiceless th? It is at ( 08:09).
​

This 'teacher' is giving a bad model for the pronunciation of farther/further. She also unhelpfully suggests that you have to stick your tongue right out to pronounce the sounds that she is talking about. You don't; you would look rather strange if you did.