The word "Rizzar" is a non-existent word in the English language, and therefore its spelling cannot be determined. However, using IPA phonetic transcription, one could approximate a possible spelling. "Rizzar" could potentially sound like /rɪzɑr/ or /rɪzər/, depending on the speaker's accent. It is important to note that just because a word may be pronounced a certain way, it does not necessarily mean that it is spelled that way.