The correct spelling of the phrase "wast worthwhile" is actually "wasn't worth while." The IPA phonetic transcription of the phrase is /wʌznt wɜrθ waɪl/. The word "wasn't" is a contraction of "was not," and "worthwhile" is one word, not two. The mistake in spelling is likely due to confusion between the similar-looking words "wast" and "wasn't." It is important to use proper spelling and grammar to accurately convey information in writing.