* "Most interesting": This is the most common meaning, referring to something that is captivating, intriguing, or engaging.
* "Most recent": This means the newest or latest item in a series or sequence.
* "Monsterest": This could be a humorous or made-up word used to emphasize something monstrous, like a huge monster or a huge problem.
To understand the intended meaning, you need more context. Please provide the sentence or situation where you encountered "mosterest."