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
compulsory (adj.)
[compulsory 词源字典]
1580s, from Medieval Latin
compulsorius
, from Latin
compulsus
, past participle of
compellere
"to drive together, force, compel" (see
compel
).
[compulsory etymology, compulsory origin, 英语词源]
[compulsory 词源字典]