The best replacement for clojure is scala.

The best alternatives to clojure are rated as following:
★★★★★  scala
★★★★  haskell
★★★★  common lisp
★★★  scheme
★★  go
★★  erlang
★  golang
★  racket
★  lisp
★  f
★  f#
★  groovy
  elixir
  ocaml
  jruby
  nodejs
  julia
  sbcl
  jython

Your alternative for clojure is not listed? Suggest!
Speaking about clojure, one probably shouldn't forget about emacs.

Other search terms related to clojure and their ratings are:
★★★★★ emacs
★★★ meta
★★ bindings
★ precision
You have in mind a companion for clojure and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of clojure in all years. Click on graph for more.
clojure
scala
haskell