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
fitness (n.)
[fitness 词源字典]
1570s, "state or quality of being suitable," from
fit
(adj.) +
-ness
. Meaning "state of being physically fit" is from 1935.
[fitness etymology, fitness origin, 英语词源]
[fitness 词源字典]