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
ineffectual (adj.)
early 15c., from
in-
(1) "not, opposite of" +
effectual
. Related:
Ineffectually
;
ineffectuality
.