The right sign depends on your meaning.
Did you lose your keys or did you lose the game?
Each uses a different
LOSE or "lost" (misplaced)
As in: "I lost my keys."
Make the sign for "more" and then turn both hands palms down
while relaxing your fingers. Pretend you were holding something between
your hands and it slipped. This sign is used when you mean the opposite
LOSE as in "fail a competition, or "We LOST at the track meet."
LOSE or FAIL (animation)
In a message dated 3/29/2005 7:08:56 AM Pacific Standard Time,
when signing "lose" as in losing a game, u have a "v" handshape go
down to your palm. In the handshape's course, does it stop and turn
a little or is the trail one straight line? The animation for "lose"
makes it seem as if the handshape stops then goes very quickly.
The movement is a straight line that moves down quickly without stopping
and smacks into the other hand rather strongly.
Think of someone falling to the ground--splat.