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
impracticable (adj.)
[impracticable 词源字典]
"incapable of being done," 1670s, from assimilated form of
in-
(1) "not, opposite of" +
practicable
. Earlier in a sense of "impassable" (1650s).
[impracticable etymology, impracticable origin, 英语词源]
[impracticable 词源字典]