Translation guide
Describes a state of being abnormally or excessively active. In Japanese, this can refer to medical conditions like ADHD, general restlessness, or lively behavior. The most common term is 多動性, often used in clinical contexts, while other expressions cover everyday hyperactivity.
He has symptoms of hyperactivity.
The full term for Attention Deficit Hyperactivity Disorder (ADHD). Often abbreviated as ADHD.
ADHD is commonly seen in children.
A shorter form of 多動性, used in medical contexts.
Hyperactive children can't stay still.
To describe a person, especially a child, who is overly active, fidgety, or unable to sit still in everyday situations.
Literally 'has no calmness', this is the most natural way to describe someone who is restless or fidgety.
My child is restless and always moving around.
Means 'cannot stay still', often used for hyperactive behavior.
He can't sit still during class.
Can be used in non-clinical contexts to mean hyperactivity, but may sound technical.
To describe someone who is very active and energetic in a positive or neutral way, not necessarily a problem.
多動性 is a clinical term and may sound like a diagnosis. In everyday conversation, 落ち着きがない is more natural for describing restlessness. Use 活発 for a positive spin.
The direct translation '超活動' is not used in Japanese. Stick to the expressions above.
That kid seems a bit hyperactive.
The kids are running around full of energy.