The word "un-hinge" means to remove or detach from its hinges or to unsettle mentally or emotionally. Antonyms for "un-hinge" include "secure", "fasten", "attach", "stabilize", "balance", "strengthen", "ground", "reassure", "calm", "compose", and "settle". When something is unhinged, it is no longer attached or stable, so the antonyms imply the act of re-attaching or stabilizing. Similarly, when someone is unhinged, they are unsettled or mentally unbalanced, so the antonyms imply the act of grounding or reassuring someone. By using these antonyms instead of "un-hinge", one can convey a sense of stability, balance, and composure.