The spelling of the word "churchier" can be explained using the International Phonetic Alphabet (IPA) as /ˈtʃɜr.tʃi.ər/. The initial "ch" sound is represented by the IPA symbol /tʃ/, followed by the vowel sound /ɜr/ (similar to the "er" sound in "her"). The final syllable is represented by the combination of the sounds /tʃi.ər/, which sounds like "chee-yer". Overall, the spelling of "churchier" follows typical English phonetic patterns and conventions.