空前绝后 kōng qián jué hòu

DEFINITIONS

  1. unprecedented and never to be duplicated
  2. the first and the last
  3. unmatched
  4. unique

CHARACTERS

空 kōng empty, hollow, bare, deserted
前 qián in front, forward; preceding
绝 jué to cut, sever, break off, terminate
后 hòu queen, empress, sovereign; (simp. for 後) behind, rear, after