Use 'unhinge' to describe a significant disturbance to someone's mental state or emotions, often temporarily. The sudden loss seemed to unhinge him completely.
Pro Tip 2/3
Figurative Sense
'Unhinge' in a mental context is usually not literal but figurative, implying loss of control rather than physical detachment. The constant pressure might unhinge her concentration.
Pro Tip 3/3
Emotional Charge
When 'unhinge' refers to mental state, it often carries a negative and intense emotional connotation. Their haunting performance was enough to unhinge the audience.