The word "krestos" refers to an ancient Greek term meaning "good" or "useful." The spelling of this word is determined by its phonetic transcription using the International Phonetic Alphabet (IPA) as /krestos/. The letter "k" represents the sound /k/ as in "cat," the letters "r" and "e" represent the sound /r/ and /ɛ/ respectively as in "red" and "bet," and the letters "s" and "t" respectively represent the sounds /s/ as in "sip" and /t/ as in "top." Together, these sounds make up the word "krestos."