The word "dumbcake" refers to a derogatory term for an unintelligent person. The spelling of this word can be explained using the International Phonetic Alphabet (IPA). The "d" sound is represented by /d/, the "uh" or schwa sound is represented by /əm/, and the "b" sound is represented by /b/. The final syllable of "cake" is represented by /keɪk/. The spelling of this word is important to understand the meaning behind it and to avoid using derogatory terms towards others.