The word "Rothernails" is a curious term with a peculiar spelling. The pronunciation of this word can be broken down into the phonetic transcription of /rɒðərneɪlz/. The first syllable, "roth," is pronounced with a long "o" sound followed by "th" as in "think." The second syllable, "er," is pronounced with a short "e" sound and an "r." The final syllable, "nails," is pronounced with a long "a" sound followed by "ls." Overall, the spelling of "Rothernails" follows the usual English orthography with some nuanced vowel pronunciations.