Dictionary.com
Thesaurus.com

borderline personality disorder

American  
[bawr-der-lahyn pur-suh-nal-i-tee dis-awr-der] / ˈbɔr dərˌlaɪn ˌpɜr səˈnæl ɪ ti dɪsˌɔr dər /

noun

Psychiatry.
  1. a personality disorder characterized by instability in many areas, as mood, identity, self-image, and behavior, and often manifested by impulsive actions, suicide attempts, inappropriate anger, or depression. BPD


borderline personality disorder British  

noun

  1. psychiatry a mental condition on the dividing line between a psychiatric disorder and normality characterized by impulsiveness, extreme mood swings, and often aggressiveness

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of borderline personality disorder

First recorded in 1975–80

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In her early teens, her parents say, she began showing signs of borderline personality disorder, attention deficit disorder and depression.

From Los Angeles Times

Twenty-seven-year-old mum-of-three Sophie Woolcott, from Poole, had a long history of mental health conditions, including borderline personality disorder.

From BBC

Hart, who is unemployed, has anxiety, depression and borderline personality disorder.

From BBC

The court was told Webb has had a "severe" autistic disorder since a young age, as well as borderline personality disorder, anxiety and depressive disorder.

From BBC

A decade ago, narcissism was a little-discussed personality disorder, especially compared to more stigmatized diagnoses, like sociopathy or borderline personality disorder.

From Salon