This meaning refers to someone who has high standards and is difficult to satisfy, often leading to a perception of being picky or fussy.

This meaning describes someone who frequently changes their emotions, often being irritable or unpredictable in their behavior.

In this context, it refers to a person who is excessively particular or demanding about their standards, often focusing on minor details.

This meaning indicates someone who is tough or gruff, often difficult to approach due to a harsh demeanor.