"Pappier" is a spelling variation of the French word "papier," which means "paper" in English. The phonetic transcription for this word is /pæpi'eɪ/. The pronunciation starts with the "p" sound, followed by the "æ" vowel sound, then "p" again, and ends with "i'eɪ," which represents the diphthong sound made up of the "i" and "eɪ." Although "pappier" is not the standard spelling in English, it may be used by some speakers as a phonetic spelling due to its closer representation of the French pronunciation.
The word "pappier" does not have a specific etymology as it is not commonly used in the English language. However, it appears to be a misspelling or an alteration of the word "paper", which is derived from the Latin word "papyrus". Papyrus was the material used for writing in ancient Egypt, made from the pith of the papyrus plant. Over time, the word "paper" evolved to refer to the writing material made from wood pulp or other fibers.