The spelling of "wert appropriate" can be explained using IPA phonetic transcription as /wɜːrt əˈprəʊpriɪt/. In this spelling, the "w" is pronounced as a voiced labial-velar approximant, followed by the stressed vowel "ɜː". The next sound is a voiced alveolar plosive "r", which is followed by the unstressed vowel "ə" and the consonant cluster "pr", which is pronounced as a voiceless bilabial plosive "p" followed by a voiced alveolar approximant "r". Finally, the stress falls on the second syllable, which is pronounced with the same vowel sound "ɪ" as in "it".
The phrase "wert appropriate" is an archaic construction in the English language. It consists of the past subjunctive form of the verb "to be" (wert) and the adjective "appropriate".
The word "wert" comes from the Old English verb "weorþan", which evolved into "were" in Middle English and later became "were" in modern English. In the past subjunctive form, "were" took on the archaic form "wert", which was used with the second person singular pronoun "thou" (e.g., "thou wert").
On the other hand, "appropriate" comes from the Latin word "appropriare", which means "to make one's own". In Middle English, it gradually evolved from "aproprien" to "appropriat" and eventually became "appropriate" in modern English.