The proper spelling of the phrase "art late for" is "ought late for," as in "should have been late for." The IPA phonetic transcription for this phrase is /ɔt leɪt fɔr/. The pronunciation of the word "ought" may sound similar to the word "art," which may cause confusion in spelling. However, it is important to use the correct spelling to convey the intended message clearly. Utilizing phonetic transcription can be useful in understanding the exact pronunciation of a word or phrase.