I'm in agreement about the uselessness of words to define time, but I doubt that even using math will help understand time. I'd argue that both math and time arise with thoughts, i.e with the faculty of defining concepts and reasoning about them, but defining a concept is not the same as understanding the essence of the thing that is being defined. I see mathematics as the extent to which "thought muscles" can be flexed (which admittedly is very impressive), but to understand the nature of time, one would have to "step out of thought" as well, which if possible would be a rare capability and obviously not an insight that could be conveyed with explanations or definitions...