Translation guide
The English word "active" covers several distinct meanings. This guide breaks them down into practical Japanese equivalents for learners.
Describing a person who moves a lot, exercises, or is full of energy.
Most common word for an active, lively person, especially children or groups. Can also describe discussions or activity levels.
She is a very active child.
Emphasizes being engaged in activities, often used for lifestyle or personality.
He leads an active lifestyle.
Literally "moves a lot"; a casual way to say someone is physically active.
Our dog is very active.
Taking part in an organization, event, or activity.
Means "to actively participate". Use this pattern to describe being actively involved.
He is actively involved in community activities.
Adjective meaning proactive or active in attitude. Often used for participation or attitude.
Means "is active" in the sense of being currently engaged in an activity or organization.
He is active as a volunteer.
Something that is working, turned on, or in effect.
Means "valid" or "active" for accounts, licenses, subscriptions, etc.
Is this password still active?
Used for machines, systems, or devices that are currently operating.
The air conditioner is active.
Specifically for people still working in their profession (e.g., active duty, active player).
The grammatical term for sentences where the subject performs the action.
The technical term for active voice in grammar.
This sentence is in the active voice.
Describing a volcano that is not dormant or extinct.
Standard term for an active volcano.
Mt. Fuji is an active volcano.
The loanword アクティブ is common in Japanese but mainly for "physically active" or "active lifestyle" contexts. It is not used for accounts, volcanoes, or grammar. Overusing it can sound unnatural.
She is active in class.
彼は現役の消防士だ。
He is an active firefighter.