Clojure is tiny in that there are very few special forms (less than 20 according to [0]) and most things are just plain functions.
More importantly, it is developed extremely conservatively which means
1) you don’t need to learn the syntax/feature of the month (like eg javascript/python)
2) the code you wrote a decade ago will still work.
That said, it does sit on top of Java/JS so you can access those parts easily if you need to.