unease
懆 centers on a state of inner disquiet: a feeling of unease, restlessness, or agitation that comes from the heart.
懆 combines the heart radical 忄 with the phonetic component 喿, suggesting a heart-related state of agitation or unease. The exact historical development is uncertain.
The heart radical 忄 beside the complex 喿 suggests a heart that is noisy and unsettled, like a tree full of chattering mouths. This captures the feeling of unease.
For ソウ, imagine a soul (ソウ) in a state of unease, its heart restless and agitated. The soul's disquiet cues the reading ソウ.
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