一言難盡 yī yán nán jìn

DEFINITIONS

  1. hard to explain in a few words (idiom); complicated and not easy to express succinctly

CHARACTERS

一 yī
HSK 1
one; a, an; alone
言 yán
HSK 4
words, speech; speak, say
難 nán difficult, arduous, hard; unable
盡 jìn exhaust, use up; deplete