一
言
为
定
y
ì
y
ī
y
á
n
y
á
n
w
é
i
w
é
i
d
ì
n
g
d
ì
n
g
Definitions
1. one word and it's settled (idiom); It's a deal!
2. That's settled then.
Components
一言
yī yán
–
one sentence
为
wéi
–
as (in the capacity of)
定
dìng
–
to set