Correct spelling for the English word "wert keen on" is [wˈɜːt kˈiːn ˈɒn], [wˈɜːt kˈiːn ˈɒn], [w_ˈɜː_t k_ˈiː_n ˈɒ_n] (IPA phonetic alphabet).
"Wert keen on" is a colloquial expression that is a combination of archaic and informal language. The phrase consists of the archaic second-person singular past form of the verb "be" ("wert") and the adjective "keen on."
The term "keen on" means to have a strong interest, enthusiasm, or liking for someone or something. The adjective "keen" denotes an intense desire or eagerness. When combined with "on," it indicates the object or subject of one's enthusiasm or interest.
Therefore, "wert keen on" can be inferred to mean an intensified or emphatic way of expressing one's strong liking, interest, or enthusiasm for someone or something. However, it is essential to note that this phrase employs an archaic form of language that is no longer commonly used in modern conversation or writing.
Overall, "wert keen on" is an older, informal language style that implies a deep passion or fondness for someone or something. This term can be seen as an example of how language evolves over time, with certain phrases becoming outdated and falling out of common usage.