悪癖

1. Origins, structure, and basic meaning

• Structure: 悪癖, read あくへき, is a noun for a persistent bad habit or vice.
• Basic usage: In 爪をかむ悪癖 and 後回しにする悪癖, the preceding clause specifies exactly which habit is meant.

2. Common pitfalls and similar expressions

• Behavior clauses modifying 悪癖
  • Nail biting and postponing problems describe the recurring behavior named by 悪癖; the noun does not suggest a single accidental act.