In BP, an epenthetic vowel is sometimes inserted between consonants, to break up consonant clusters that are not native to Portuguese, in learned words and in borrowings. This also happens at the ends of words after consonants that cannot occur word-finally (e.g., , , ). For example, "psicologia" ('psychology') may be pronounced ; "adverso" ('adverse') may be pronounced ; "McDonald's" may be pronounced . In northern Portugal, an epenthetic may be used instead, , , but in southern Portugal there is often no epenthesis, , . Epenthesis at the end of a word does not normally occur in Portugal.