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
rigorous (adj.)
[rigorous 词源字典]
late 14c., from Old French
rigorous
(13c., Modern French
rigoureux
), from Medieval Latin
rigorosus
, from Latin
rigor
(see
rigor
). Related:
Rigorously
.
[rigorous etymology, rigorous origin, 英语词源]
[rigorous 词源字典]