agitated
慅 centers on inner disturbance: a state of being emotionally agitated or restless.
慅 combines the heart radical 忄 with 蚤, which likely contributes the sound and may suggest a restless, flea-like agitation.
The heart 忄 beside a flea 蚤: imagine your heart jumping like a flea, unable to settle down. That restless feeling is agitation.
For ソウ, picture your agitated heart making you feel like you need to sew (ソウ) something quickly to calm down: sew -> ソウ.