If you look at RTings, in addition to frequency response there are other objective measurements that can describe headphone performance, and you can maybe learn your own ears and head and how they'd transfer those numbers into the phenomenology of listening...maybe.

It's not perfect, but your other choice is watching Christopher Suede videos and trying to assign meaning to words like thick... ephemeral...euphonic...dark...bright...warm...analytic...fast...tight...velvety