The correct spelling of the phrase "wast agitated" is with the letter "t" at the end of "wast". This is because "wast" is a contraction of the archaic English word "wast thou", meaning "were you". The addition of the "t" at the end is necessary for grammatical correctness. Phonetically, the word is spelled /wɑːst ædʒɪteɪtɪd/, with two syllables in "agitated" pronounced as "ad-juh-ted".
The phrase "wast agitated" does not have a specific etymology as it is a combination of two separate words with their own origins.
1. Wast: Wast is an archaic form of the word "were" which is the second-person singular past tense of the verb "to be". It comes from the Old English word "wǣre" which means "were" or "was". The origin of "wǣre" is from the Proto-Germanic "*wēz", related to the Proto-Indo-European root "*es-" meaning "to be".
2. Agitated: Agitated is the past participle of the verb "agitate" which means to disturb or excite someone emotionally. It comes from the Latin word "agitatus", the past participle of "agitare" which means "to cause to move, shake, or drive".