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lively; active; vigorous; animated; brisk
彼女は活潑な性格で誰とでもすぐに打ち解ける。
She has a lively personality and gets along with anyone right away.
春になると動物たちの活動が活潑になる。
In spring, the activities of animals become more vigorous.
活潑な子犬が庭を駆け回っていた。
A lively puppy was running around the garden.