驚
キョウ, おどろ.く, おどろ.かす

wonder, be surprised, frightened, amazed

JLPT1 G7 S22 F1141

As per 敬# (stiff; upright) + 馬 horse → startled horse that stiffens in attention (compare 篤) → *surprise*; *astonishment* → *fright*; *shock*; *wonder*; *marvel*.

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