愚痴

1. Origins, structure, and basic meaning

• Structure: 愚痴 means grumbling or voicing frustration and dissatisfaction.
• Basic usage: It is used for airing complaints about work or describing someone who keeps complaining.

2. Common pitfalls and similar expressions

• Purpose compared with 苦情
  • 苦情 commonly reports a problem to someone and seeks improvement. 愚痴 places more emphasis on voicing frustration and letting feelings out.