The word "craster" may seem confusing to spell. However, once we break it down using the International Phonetic Alphabet (IPA) transcription, it becomes easier to understand. The first syllable is pronounced as "kɹæs", with a hard "k" sound and the "a" as in "cat". The second syllable is "tər", with the "t" sound followed by an "uh" sound and then the "r". So, the correct spelling of "craster" would be "C-R-A-S-T-E-R".