The word "STAI" is pronounced /steɪ/. It is spelled with the letter "S" followed by the letters "T," "A," and "I." The "S" represents the voiceless alveolar sibilant sound, the "T" represents the voiceless alveolar stop sound, the "A" represents the short vowel sound "æ," and the "I" represents the long vowel sound "i." The spelling of "STAI" follows standard English phonetics and is commonly used in words such as "stain," "stair," and "staid."