Made something empty by removing its inside; or made someone feel emotionally empty.
From Old English 'hol' (hollow), related to 'hole.' The past tense 'hollowed' emerged naturally from the verb form.
When sad people say they feel 'hollowed out,' brain scans actually show changes in their prefrontal cortex—they're describing something neurologically real, and the metaphor of emotional emptiness matches the actual physical patterns of depression in the brain.
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