The spelling of the word "dummiest" can be a bit confusing due to the double "m" and "i" in the middle. However, the IPA phonetic transcription can help clarify this. The pronunciation of "dummiest" is /ˈdʌm.i.ɪst/, with emphasis on the first syllable. The double "m" represents the short "u" sound, while the double "i" represents the long "i" sound. So, the spelling of "dummiest" accurately reflects its pronunciation.
The word "dummiest" is derived from the adjective "dummy", which originated in the late 16th century. The term "dummy" initially referred to a mute or silent person, often a deaf-mute. It later extended in meaning to describe a person who appears lacking in intelligence or understanding. The suffix "-est" is added to the adjective "dummy" to form the superlative degree, making it "dummiest", meaning the most dummy-like or the least intelligent among a group.