The sign for pardon is related to the sign for "excuse" but the sign
"PARDON" (as in "he was pardoned from prison") is done with a
single, larger movement. If you mean "pardon me" (as in
"excuse me" then just use the normal sign for "excuse."
LAID-OFF / RELEASED FROM DUTY / PARDONED / "you are excused"
Use a single, larger movement:


Animation: To be dismissed,
pardoned, or laid off work.
Also see:
EXCUSE
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American Sign Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars