despise, contempt, ugly, same as, (ghost kanji)
妛 is a rare, possibly ghost kanji with unclear standalone meaning. The given glosses suggest contempt, despising, or ugliness, but these may be unreliable. Treat its meaning as uncertain.
The origin of 妛 is obscure. It may be a variant or erroneous form, but its historical development is uncertain.
The top 屮 looks like a sprout, and the bottom 女 is a woman. Imagine a woman contemptuously looking down on a tiny sprout, finding it ugly and despising it.
For シ, picture a woman (女) hissing (シ) in contempt at the sprout (屮) above her: the hiss sound cues シ.