fast, quick
慓 centers on swiftness of mind or action: being fast or quick. The given meanings are closely related, both describing rapidity.
慓 combines the heart radical 忄 with 票, which likely contributes the sound ヒョウ. The heart component suggests a mental or emotional quality, giving the sense of mental quickness or swiftness.
The heart radical 忄 beside 票 (which can suggest a fluttering ticket or label) gives the image of a heart that flutters quickly. Think of a fast-beating heart when you need to be quick.
For ヒョウ, imagine a fast-moving hyō (雹, hailstone) striking the ground: hyō -> ヒョウ, and the quick impact matches the kanji's meaning of fast.
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