定期的な（ていきてきな、teikiてきna）
- regular

The Japanese word 定期的な (ていきてきな) means "periodic," "regular," "scheduled," or "routine." It describes something that happens at fixed intervals or on a predictable schedule. It suggests a planned or established pattern of occurrence. The word implies a sense of consistency and predictability. The adjective 定期的な modifies a noun to indicate that the noun's action or characteristic occurs at 定期的な intervals.

⚫︎定期的な運動 Translation: Regular exercise ⚫︎定期的な健康診断 Translation: Regular health checkups ⚫︎定期的な会議 Translation: Scheduled meetings

You use 定期的な to describe activities, events, or processes that occur at fixed times or intervals. It can be used in various contexts, such as describing meetings, checkups, maintenance, or any other activity that follows a set schedule. It’s useful when you want to emphasize the consistent and predictable nature of something. It often appears in formal contexts, but can be used in casual settings as well. When using 定期的な, make sure to consider the context to avoid ambiguity, to express the meaning accurately.

定期的な is typically written with the following: ⚫︎ Kanji: 定期的な ⚫︎ Hiragana: ていきてきな There are no other variations in writing the word itself. The okurigana is fixed. 定期的な is an adjective, and the "-な" indicates its adjectival form (similar to "pretty" or "beautiful" in English). You might see conjugations of this, such as 定期的に (teikitekini), which functions as an adverb and means "periodically" or "regularly."

⚫︎ 規則的な (kisokutekina) - Regular, methodical ⚫︎ 定期的 (teikiteki) - This is the noun form. ⚫︎ 一定の (ittei no) - Fixed, constant, certain ⚫︎ 頻繁な (hinpannna) - Frequent

⚫︎ 不定期な (futeikina) - Irregular ⚫︎ 不規則な (fukisokuna) - Irregular, unscheduled ⚫︎ 時々の (tokidoki no) - Occasional ⚫︎ 臨時的な (rinjiteki na) - Temporary, provisional

定期的なメンテナンスは、機械の寿命を延ばします。 ・Translation: Regular maintenance extends the life of the machine. ・Explanation: This sentence uses 定期的な to show that the maintenance is performed on a schedule, ensuring the machine functions well for a longer time.

医者は患者に定期的な検査を受けるように勧めた。 ・Translation: The doctor advised the patient to undergo regular checkups. ・Explanation: The use of 定期的な emphasizes the consistent nature of the medical checkups for preventative care.

The word 定期的な is formed from: ⚫︎ 定期 (teiki) - meaning "fixed period," "regular period," or "scheduled." ⚫︎ 的 (teki) - a suffix which turns the word into an adjective, denoting a characteristic or tendency. ⚫︎ な (na) - the adjectival suffix. Therefore, the word's etymology clearly reflects its meaning, which centers around a consistent, predefined schedule or interval.