quword
趣词
Word Origins Dictionary
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
unprecedented (adj.)
1620s, from
un-
(1) "not" +
precedented
. In common use from c. 1760.