The word "foyled" is a variant spelling of "foiled," which means to prevent the success of something. The letter "y" in "foyled" represents a yod coalescence in English, where the sound /ɪ/ (as in "hit") merged with the sound /j/ (as in "yes"). In IPA phonetic transcription, "foiled" is pronounced as /fɔɪld/, while "foyled" is pronounced as /fɔjld/. Despite being a valid variant spelling, "foyled" may be perceived as a misspelling by some readers.