The word "most inevasible" means something that is impossible to avoid or escape from. Antonyms for this word could include "avoidable," "evitable," "less certain," "less probable," "unlikely," and "unavoidable." If something is avoidable, then it is possible to steer clear of it or prevent it from happening. On the other hand, if something is evitable, then it is able to be avoided by taking certain actions. If something is less certain or less probable, then it may still be possible to avoid it, but the likelihood of doing so may be lower. Lastly, if something is unlikely, then it is not expected to happen or occur.