一言为定 yī yán wéi dìng

DEFINITIONS

  1. (idiom) it's a deal
  2. that's settled then

CHARACTERS

一 yī
HSK 1
one; a, an; alone
言 yán
HSK 4
words, speech; speak, say
为 wéi
HSK 2
do, handle, govern, act; be
定 dìng
HSK 3
decide, settle, fix