The sign for "SECRET" is also used to mean "PRIVATE."
The location and handshape of the sign 'secret' when produced with different movements and non-manual markers (facial expressions) can mean "SUFFER" or "PATIENCE."
SECRET:
Tap your lips twice with the back of the "A" hand thumb.




Secret: (animated)

If you mean 'secret' as in "keep a secret, you are not telling the secret" you would sign:
Another version of "I'm not telling:"
Sample sentence: It is impossible for my sister to keep a secret.
Notes:
Also see: SUFFER
Also see: PATIENCE
Also see: PRIVATE
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