fəˈnɛtɪkli
Let's break it down:
* fə - like the "uh" sound in "but"
* ˈnɛ - like the "neh" sound in "net"
* tɪ - like the "tih" sound in "bit"
* kli - like the "klee" sound in "clean"
This is just one way to spell it phonetically, as there can be slight variations in pronunciation depending on dialect and individual speech patterns.