The spelling of the word "fendley" can be explained using IPA phonetic transcription. The "f" sound is represented by the symbol /f/, while the "e" sound is represented by the symbol /ɛ/. The "n" sound is represented by the symbol /n/, and the "d" sound is represented by the symbol /d/. The "l" sound is represented by the symbol /l/, and the "ey" sound is represented by the symbol /eɪ/. Therefore, the correct spelling of the word "fendley" would be /ˈfɛndli/.