foolish, silly, imbecile
儍 centers on a lack of intelligence or good judgment: being foolish, silly, or an imbecile.
The exact historical development of 儍 is uncertain. It likely combines the person radical 亻 with a phonetic component, but the origin of the right side is unclear.
The person radical 亻 beside a tangled right side suggests a person whose thoughts are jumbled and foolish.
For サ, imagine a silly person sighing 'sah…' in confusion: sah -> サ, and the fool stands there looking clueless.
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