The phrase "more dumdum" may seem unusual to some, but its spelling follows phonetic transcription rules. In the International Phonetic Alphabet (IPA), the "m" in "more" is pronounced as /m/, while the "d" sound in "dumdum" is written as /d/. The vowel sound in both words is the same, represented by /ɔr/. The repetition of the word "dumdum" accentuates its meaning as an adjective for something foolish or silly. Therefore, the spelling of "more dumdum" can be deciphered through IPA transcription.