kestäisikin
The Finnish word "kestäisikin" is a conditional form of the verb "kestää," which has several meanings including to last, to endure, to tolerate, or to hold out. The "-isi-" ending signifies the conditional mood, expressing a hypothetical or desired situation. The "-kin" suffix, on the other hand, is a clitic particle that adds emphasis, often translating to "too," "also," or implying a sense of surprise or longing, depending on the context.
Therefore, "kestäisikin" conveys a wish or a hypothetical scenario where something would last, endure, or hold