The Meaning of katsudō [活動] In Japanese

活動
かつどう
Romaji: katsudō N4

What does 活動 mean?

Translation and Meaning

activity, action, operation, movement

Definition

What does 活動 mean? It denotes the state or process of actively engaging in actions or activities, referring to the actions and efforts of a person, group, or organization in a given context. It connotes ongoing, purposeful movement or participation rather than a single isolated act.

Type

noun (名詞); can take suru to form 活動する (suru-verb).

Stroke Order

Meanings

  • General sense of ongoing action or state of being active
  • Organized or purposeful sets of actions carried out by individuals, groups, or institutions
  • Contextual nuance in academic, policy, or activist discourse referring to levels of engagement or campaigns

Etymology

かつどう (katsudō) combines the on’yomi readings of 活 and 動 to form a Sino-Japanese compound; the pronunciation relies on standard on’yomi and remains stable in modern usage.

Composition

  • 活: life, to live; active
  • 動: movement, motion; to move

Usage

Used as a noun to denote activity in various domains—daily life, work, study, or social programs—and as the base for verbs like 活動する; common collocations include 社会活動, 部活動, 研究活動; formal writing tends to favor 活動 over more casual synonyms.
💡 Tips
Mnemonic: imagine a living person who is actively moving—活 (live) + 動 (move) equals 活動 (activity).

Variations

  • 行動 (koudō) — action, conduct
  • 活躍 (katsuyaku) — activity, prominence

Example Phrases

  • 就職活動中、彼女は自信を持って面接に臨んだ。
    Shuushoku katsudou-chuu, kanojo wa jishin wo motte mensetsu ni nozonda.
    During job-hunting, she faced the interview with confidence.
    Lista:
    • 就職活動中 (shuushoku katsudou-chuu) – during job-hunting
    • 彼女は (kanojo wa) – she (topic marker)
    • 自信 (jishin) – confidence
    • を (wo) – object marker
    • 持って (motte) – holding
    • 面接 (mensetsu) – interview
    • に (ni) – to
    • 臨んだ (nozonda) – faced
    Core point: 「自信」 is a noun; 「自信を持つ」 means ‘to have/hold confidence’; here it describes approaching the interview with confidence.
  • 彼は就職活動の成功を家族に報告した。
    Kare wa shūshoku katsudō no seikō o kazoku ni hōkoku shita.
    He told his family about his job-hunting success.
    Lista:
    • 彼は (kare wa) – he
    • 就職活動の (shūshoku katsudō no) – of job hunting
    • 成功を (seikō o) – the success
    • 家族に (kazoku ni) – to family
    • 報告した (hōkoku shita) – reported
    「成功」 is used as a noun here; 就職活動の成功 forms a noun phrase meaning ‘the success of job hunting’, with の linking the words, and を marking the object of 報告した.
  • 就職活動中、前途に不安があっても、私は前進する。
    shuushoku katsudou chuu, zento ni fuan ga atte mo, watashi wa zenshin suru.
    During job hunting, even if there is anxiety about the future, I move forward.
    Lista:
    • 就職活動中 (shuushoku katsudou chuu) – during job hunting
    • 前途に (zento ni) – toward the future
    • 不安が (fuan ga) – anxiety
    • あっても (atte mo) – even if
    • 私は (watashi wa) – I
    • 前進する (zenshin suru) – move forward
    「前途」 means ‘future prospects’; here it marks the future as the source of worry. The pattern 「〜に不安がある／〜に不安があっても」 expresses having anxiety toward something; in this sentence, ‘前途に不安’ = anxiety about the future.
  • 今日は 学校の 部活の 活動 が 忙しい
    Kyou wa gakkou no bukatsu no katsudou ga isogashii
    Today, the school’s club activities are busy.
    Lista:
    • 今日は (Kyou wa) – today
    • 学校の (gakkou no) – school’s
    • 部活の (bukatsu no) – club’s
    • 活動 (katsudou) – activities
    • が (ga) – subject marker
    • 忙しい (isogashii) – busy
    「活動」は名詞で、主語として機能する。ここでは「学校の部活の活動」を指す。
活動