Meaning and Usage
"定期" (ていき) refers to something that occurs or is valid for a fixed or regular period. It is commonly used in contexts like transportation passes, bank deposits, and scheduled events.
Common Collocations
- 定期券 (ていきけん): commuter pass, used for regular travel on trains or buses.
- 定期預金 (ていきよきん): fixed-term deposit in a bank.
- 定期的に (ていきてきに): regularly, periodically.
Nuances and Register
"定期" is a neutral term used in both formal and informal contexts. When combined with "的に" it becomes an adverb meaning "regularly" or "periodically." It often implies a routine or scheduled repetition.
Common Mistakes
Learners sometimes confuse "定期" with "期限" (きげん), which means "deadline" or "expiration date." Remember, "定期" emphasizes regularity or fixed intervals, while "期限" focuses on the limit of time.
Practical Tips
Use "定期券" when talking about monthly or weekly transportation passes. Use "定期的に" to describe habits or actions done regularly, like "定期的に運動する" (exercise regularly). For financial contexts, "定期預金" is a key term to know.