Bipolar
/baɪˈpoʊlər/
Synonyms
- dual
- manic-depressive
- twofold
Slang Meanings
Acting erratic or unpredictable.
He was so bipolar today, one minute happy and the next angry.
Used to describe someone who frequently changes opinions or emotions.
She's being so bipolar about the concert plans, one moment she's in, next she's out.