The word "haddix" can be a bit tricky to spell due to its pronunciation. In IPA phonetic transcription, it is spelled as /hædɪks/. The "ha" sound is represented by the IPA symbol /h/, followed by the vowel sound "a" represented by /æ/. The hard "d" sound is spelled as /d/, and the vowel sound "i" is represented by /ɪ/. Finally, the last two letters "ix" are spelled as /ɪks/. Keeping this in mind can help ensure proper spelling of this word.