The spelling of the word "whatever person" is relatively straightforward, as both words are spelled as they sound. When pronounced, the word "whatever" is phonetically transcribed as /wɒtˈɛvər/ and the word "person" is /ˈpɜːsən/. The IPA phonetic transcription system allows speakers of different languages to accurately represent the sounds of words, regardless of their native tongue. In this case, the word "whatever person" is a common phrase used to refer to an unidentified individual, and it is spelled and pronounced in a manner that is easily understood by English speakers.
The term "whatever person" is not a standard English phrase or word with a distinct etymology. "Whatever" is a common English term, but when used together with "person", it does not form a specific compound word or idiomatic expression with a unique origin. It is merely a combination of the indefinite pronoun "whatever" and the noun "person", forming a phrase that implies an indifferent or dismissive attitude towards an individual.