活動

Activity, action, or operation.

Readings

Other forms

活動する verb form

活動します polite form

活動した past form

活動している continuous form

Noun, Suru verb

"Activity" / "Operation"

Describes a state of being active or functioning, often applied to organized efforts, groups, or dynamic natural phenomena.

Good to know

活動（かつどう） means activity, operation, or active work, especially something that continues over time.

It is not usually for a single quick action. It often describes the ongoing work of a group, organization, club, campaign, or natural system.

Common patterns include 部活動（ぶかつどう） for school club activities and 火山活動（かざんかつどう） for volcanic activity.

As a する-verb, 活動する（かつどうする） means to be active, to operate, or to carry out activities.

In modern Japanese, 〜活（かつ） is a common shortened form for an active life goal or organized personal effort. For example, 就活（しゅうかつ） means job hunting, from 就職活動（しゅうしょくかつどう）, and 婚活（こんかつ） means actively looking for a marriage partner.

Example

火山が活動を始めた。

The volcano has started to become active.

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VOCAB 2 / 30

活動

かつどう

Activity, action, or operation.

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