Despiteously is not a common word, but it is a legitimate adverb that means to act in a way that shows malice or spite. The IPA phonetic transcription for this word is /dɪˈspaɪt(j)əsli/. The first syllable is stressed and pronounced with a short "i" sound, followed by the "s" sound. The second syllable is pronounced with a long "i" sound before the "t" and "j" sounds. The final syllable is pronounced with a short "i" sound and the "li" consonant blend. Despiteously may be spelled with an "e" instead of an "i" in some dictionaries.