Unable to add a hyphenated word to the dictionary (specifically Wi-Fi)

The word "Wi-Fi" appears with "Wi" and "Fi" underlined.  When I select "Wi-Fi" then tell the SpellChecker to add the word, it only adds "Fi".  If I manually edit the "QtC-en_US.udic" file, replace "Fi" with "Wi-Fi", then save the file and restart Qt Creator, Wi" and "Fi" are still underlined.  Is there a way to add hyphenated words like "Wi-Fi"?  If not, can support be added for it?