The Greek diphthong "αι" is pronounced like the English "e" in "bet." It is commonly found in various Greek words and plays a significant role in the language's phonetics. In the Greek alphabet, "αι" is represented by the letters α and ι, combining to create a single sound. In modern Greek, "αι" appears in many everyday words, such as καί (meaning "and") and παίρνω (meaning "I take"). Understanding this diphthong is essential for learners of the language, as it helps with pronunciation and comprehension of written texts.