弱虫

1. Origins, structure, and basic meaning

• Structure: 弱虫 is read as よわむし and is a disparaging noun for a coward or weakling.
• Basic usage: Use 自分を弱虫だと思う for self-labeling and 弱虫とからかう for teasing someone with the word.

2. Common pitfalls and similar expressions

• Negative label for a person
  • It is stronger than describing a temporary weakness and can belittle the person it names.
• Contrast with 弱い
  • 弱い describes weak strength or ability, while 弱虫 labels the person as a coward or weakling.