The word "supplantments" is not a correct spelling in English. The correct spelling should be "supplements," pronounced as /ˈsʌplɪmənts/. The IPA phonetic transcription for this word is helpful in understanding its correct spelling. The symbol /s/ represents the "s" sound at the beginning of the word, while the symbol /ʌ/ represents the "uh" sound in the first syllable. The symbol /p/ represents the "p" sound, followed by the symbol /l/ for the "l" sound in the second syllable. The symbol /ɪ/ represents the "ih" sound in the final syllable, with the symbol /m/ and /ənts/ representing the "m" sound and the "uhnts" sound respectively.