The spelling of the word "Pesterment" may seem confusing, but it actually follows the common pronunciation pattern in English. The first syllable is pronounced as "pes" (/pɛs/), with a short "e" sound. The second syllable is pronounced as "ter" (/tɜr/), with a schwa sound. Finally, the suffix "-ment" (/mɛnt/) is added to make it a noun. "Pesterment" refers to the act or process of pestering or annoying someone. Although not a commonly used word, it can still be found in some dictionaries.