The word "poppest" is spelled with two p's and two e's. In IPA phonetic transcription, it is spelled as /ˈpɑpəst/. The first p is pronounced with strong puff of air, followed by a short "a" vowel sound. The second p is pronounced in the same way, followed by a short "ə" vowel sound, also known as a schwa. The final "est" is pronounced as "əst", with a schwa vowel sound followed by a soft "t" sound. "Poppest" is the superlative form of the verb "pop", meaning to make a small explosive sound.
The word "poppest" is derived from the Middle English word "poppin", which means "to burst or make a popping sound". This term eventually evolved into the verb "pop" and the adjective "poppest". It is related to the Old English word "poppian" and the Proto-Germanic word "puppijan" meaning "to crack" or "to make a noise". The association with a sudden burst or sound is also seen in the noun "pop" referring to a loud noise or the sound of something being burst open.