Tetaumatawhakatangihangakoauaotamateaurehaeaturipukapihimaungahoronukupokaiwhenuaakitanarahu
Floccinaucinihilipilification and
Pneumonoultramicroscopicsilicovolcanokoniosis
I can't believe you didn't get those three, they were the easiest in the whole crsossword.