The word "smeariest" is spelled as [smɪəriəst], with the stress on the second syllable. The spelling of this word is derived from its root word "smear", which means to spread or cover with a thick or greasy substance. The suffix "-iest" is added to the end of the word to indicate the superlative degree, i.e., the most smear-like or having the most smear-like qualities. In spelling this word, it is important to note the two vowels "e" and "a" in the middle of the word, which are pronounced as a diphthong [ɪə].
The word smeariest is derived from the root word smear. The etymology of smear can be traced back to the Old English word smerian, meaning to anoint or rub with grease. Over time, the word evolved into smere and eventually became smear in Middle English. The suffix -iest is added to the base word smear to indicate the superlative degree, meaning the most smeared or having the most amount of smear.