• Mental debilitation
• Mental debility
• Mental deconditioning
• Mental degeneration
• Mental derangement
• Mental dexterity
• Mental dexterousness
• Mental disburdening
• Mental disorder
• Mental disordering
• Mental disorganization
• Mental disposition
• Mental dissociation
• Mental distraction
• Mental distress
• Mental dopiness
• Mental downshift
• Mental dulness
• Mental duress
• Mental dwarfishness