The word "wast featured" is an old-fashioned spelling of "was featured", which meant to be prominently displayed or highlighted. The incorrect spelling of "wast" is actually a contraction of the archaic form of the second person singular past tense of the verb "to be", which was "thou wast". Its IPA transcription is /wɑst/. However, nowadays we use the correct modern spelling "was", which is pronounced with the phonetic transcription of /wʌz/.
The phrase "wast featured" is not a commonly used term, and it does not have a clear etymology. The words "wast" and "featured" have separate origins.
The word "wast" is an archaic form of "was" and comes from Old English. "Was" is derived from the Proto-Germanic word "was", which means "to dwell" or "to remain". Over time, "was" evolved into its present form.
The word "featured" comes from the noun "feature", which originally referred to the individual parts or characteristics that make up a person's face. The term then extended to describe a person's overall appearance or distinctive facial characteristics. The etymology of "feature" can be traced back to the Old French word "feauture", which means "appearance" or "characteristic".