There are no standard antonyms for the word "splayest" since it is not an established word in English. However, if we consider the root of the word "splay" which means to spread out, we can think of several possible antonyms. Antonyms of "splayest" can be "gathers," "concentrates," "converges," "narrows," or "tightens." For instance, instead of saying "her fingers splayest across the keys of the piano," we can say "her fingers gather around the keys of the piano" to convey a different meaning. It is important to remember that antonyms are words with opposite meanings to other words, and therefore the context in which they are used plays a crucial role.