定てい期き的てき

て

い

き

て

き

Common wordJLPTN2

Meanings

1

na-adjective

periodic; regular; routine

Describes events, actions, or states that occur at fixed intervals or on a recurring schedule. Often used with に as an adverb.

この会かい議ぎは定てい

期き

的てき

に

開ひら

か

れ

て

いる

。

This meeting is held regularly.

定てい期き的てきな運うん動どうは健けん康こうに良いい。

Regular exercise is good for your health.

Usage patterns

〈事こと〉を定てい期き的てきに行おこなうto do something on a regular basis
健けん康こう診しん断だんを定てい期き的てきに行おこなうことが大たい切せつだ。
It's important to have health checkups on a regular basis.
定てい期き的てきな〈事こと〉regular/periodic (event, meeting, etc.)
このチームは定てい期き的てきな会かい議ぎで進しん捗ちょくを確かく認にんしている。
This team checks progress through regular meetings.

Kanji

定determine, fix, establish
期period, time, date
的bull's eye, mark, target

Related words

周しゅう期き的てき
周期的 stresses a cyclical or repeating natural pattern, while 定期的 simply means occurring at set, scheduled intervals.
恒こう常じょう的てき
恒常的 describes something constant or ever-present, whereas 定期的 describes something that repeats on a schedule with gaps in between.
定てい期きN3
定期的 is the explicit な-adjective meaning 'periodic/regular', while 定期 functions more as a noun or の-adjective with a similar meaning.

Opposites

不ふ定てい期き
不定期 means irregular or without a fixed schedule, the direct opposite of 定期的.
随ずい時じ
随時 means happening as needed without a fixed schedule, whereas 定期的 means happening regularly at set intervals.

Don't confuse with

定てい期きN3
定期 is a noun meaning 'fixed term' or (colloquially) 'season ticket', while 定期的 is the na-adjective meaning 'periodic'.

Built from

定てい期き+的てき

Etymology

Compound of 定期 (fixed period) + 的 (-like, -ic). The exact historical derivation is straightforward; the word follows a common pattern for forming adjectival nouns.