The spelling of the word "Astrithr" may seem confusing at first glance, but with the help of IPA phonetic transcription, its pronunciation becomes clear. The first syllable is pronounced as "æs", similar to the word "as", followed by "trɪθr" which is pronounced like "trith-er". The "th" sound is produced by placing the tongue in between the teeth and blowing air out, creating a fricative sound. Overall, the spelling of "Astrithr" accurately represents its pronunciation with the help of IPA phonetics.