The word "frustratory" may seem confusing in terms of spelling. However, it is derived from the word "frustrate," and the suffix "-ory." In IPA phonetic transcription, it would be pronounced as /ˈfrʌstreɪtəri/. This word describes something that causes frustration, annoyance, or disappointment. It is important to remember that even though some words may seem complicated to spell, they often have origins in simpler words or suffixes. Learning the rules of suffixes and prefixes can help improve spelling and vocabulary skills.