bipolar
adj.adj. having or relating to two completely opposite extremes. It is most often used to describe a mental health condition where a person's mood swings between feeling very energetic and very depressed.
adj. relating to or having two opposite poles, extremities, or natures. In contemporary usage, it predominantly describes a psychiatric condition characterised by alternating episodes of mania and depression, though it retains technical applications in physics and international relations.
He was diagnosed with bipolar disorder in his early twenties.
The medication helps manage her bipolar condition by preventing extreme shifts in her daily mood and energy levels.
During the Cold War, the global political landscape was strictly bipolar, forcing smaller nations to align themselves with either Washington or Moscow to secure economic aid.
From bi- + polar.
Frequently collocates with 'disorder' or 'depression' in medical contexts, and with 'world' or 'system' in political science.