However, Sidwell (2015c) found that iron is not reconstructable in Proto-Austroasiatic, since each Austroasiatic branch has different terms for iron that had been borrowed relatively lately from Tai, Chinese, Tibetan, Malay, and other languages.
haʊˈɛvɚ, sˈɪdwɛl tˈuː θˈaʊzənd fˈɪftiːn sˈiː fˈaʊnd ðæt ˈaɪɚn ɪz nˌɑːt ɹˌiːkənstɹˈʌktəbəl ɪn pɹˈoʊɾoʊˌɔːstɹoʊsɪˈæɾɪk, sˈɪns ˈiːtʃ ˌɔːstɹoʊsɪˈæɾɪk bɹˈæntʃ hɐz dˈɪfɹənt tˈɜːmz fɔːɹ ˈaɪɚn ðæt hɐdbɪn bˈɑːɹoʊd ɹˈɛlətˌɪvli lˈeɪtli fɹʌm tˈaɪ, tʃaɪnˈiːz, tɪbˈɛtən, məlˈeɪ, ænd ˈʌðɚ lˈæŋɡwɪdʒᵻz.