1. instances or states of being mentally disturbed or disordered; mental illness or insanity
Usage: plural form of derangement; formal or medical usage
2. disruptions or disturbances of normal order or arrangement; disorganization
Usage: less common usage

Examples

• The doctor studied various derangements of the mind in her psychiatric practice.
• His derangements became more severe over time without proper treatment.
• The derangements caused by the storm left the town in chaos.
• She documented the patient's derangements in detailed clinical notes.
• The derangements of the filing system made it impossible to find anything.
• Mental derangements can affect a person's ability to function in daily life.