back, amidst, in, reverse, inside, palm, sole, rear, lining, wrong side
裏 centers on the hidden or opposite side of something: the back, the inside, the reverse, or the wrong side. It extends naturally to the palm or sole as the inner surface, and to lining as the inner layer.
opposite side; bottom; other side; side hidden from view; undersurface; reverse side
to betray; to turn traitor (to); to double-cross; to go back on; to be unfaithful (to)
the reverse (side); back (side); other side; hidden side; behind the scenes
treachery; betrayal; perfidy
back (side); reverse
back (side); reverse
support (e.g. for an argument); backing; proof; evidence; corroboration; substantiation; guarantee; security
betrayer; traitor; turncoat; informer
inside out; upside down
opposite; reverse; contrary
back and front; inside and outside; both sides
offstage; backstage; behind the scenes
someone working behind-the-scenes; scene shifter
to support (a theory, claim, etc.); to back up; to substantiate; to prove
one's mind
backdoor; rear entrance; rear exit
reverse side
front and back; inside and outside; two sides; both sides
bribe
side street (often parallel to a main street); back street; alley; alleyway
back lane; byway; back street
to turn inside out; to turn the other way; to turn (something) over
back gate
裏 combines 衣 (clothing) and 里, which likely contributes the sound. The idea is the inside or lining of a garment, extended to the back or reverse side of things.
The 衣 (clothing) wraps around 里, like the inner lining hidden inside a coat. Picture turning a jacket inside out to see the back side.
For リ, imagine reaching inside the lining of a coat and pulling out a single reed (リード, riido) that was hidden there: reed -> リ.