The spelling of the word "righini" can be explained using the International Phonetic Alphabet (IPA). The first syllable, "ri", is pronounced as /ˈriː/. This is followed by the consonant cluster "gh", which is pronounced as /ɡ/. The second syllable, "ni", is pronounced as /niː/. Thus, the overall pronunciation of "righini" is /ˈriːɡ.niː/. While the spelling of this word may seem unfamiliar at first glance, the use of IPA can help accurately convey its pronunciation.