Keyword
backside
Info
FrequencyTop 400-500
Type
Kyōiku (6th grade) 
?
KankenLevel 5
Heisig426
Readings
うら
(84%)
(15%)
Composed of
lid
home village
cape
Used in vocabulary (224 in total)
opposite side; bottom; rear; back; lining; inside; in the shadows
to betray; to turn traitor to; to double-cross
one's mind
Examples (82 in total)
There must be something at the back of this matter.
There are complicated circumstances behind the matter.
Never betray the trust of your friends.