Choleric
/ˈkɑːlərɪk/
Definition 1 of 2
Pro Tip 1/3Emotional Charge
Use 'choleric' to describe someone showing a strong emotional response, typically anger. 
Avoid Tim when he's choleric; he's likely to start an argument over trivial matters.
Pro Tip 2/3Negative Connotation
'Choleric' often carries a negative connotation, suggesting unreasonable or excessive anger. 
The choleric boss made the work environment stressful for everyone.
Pro Tip 3/3Strong Intensity
'Choleric' implies a higher intensity of temper compared to just being 'irritable' or 'annoyed'. 
The choleric customer yelled at the cashier over a minor mistake.