投げ捨てる

1. Origins, structure, and basic meaning

• Structure: 投げ捨てる, read なげすてる, combines 投げ, the combining form of 投げる, with 捨てる.
• Basic usage: In 読み終えた手紙を怒りに任せて投げ捨てる。, someone flings away a letter after reading it, acting in anger.

2. Common pitfalls and similar expressions

• Manner of discarding
  • 捨てる names the act of discarding; 投げ捨てる also conveys the rough motion of flinging it away. In the example, 怒りに任せて explicitly identifies the emotion.
• Inflection of the final verb
  • Inflection follows the final 捨てる, giving 投げ捨てた and 投げ捨てない. The initial 投げ stays unchanged.