Meaning & usage
というのは〜ことだ gives a definition or explanation of a term or idea, with the sense of what something means is a certain action or state. A noun such as 自由 or 友情 comes before というのは, and the explanation after it is nominalized with ことだ or ということだ. That predicate can be a noun, a verb in forms such as dictionary form, past or passive, or an i-adjective or na-adjective, and the grammatical こと is normally written in hiragana rather than 事.
Example sentences 5
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自由というのは自分で選べることだ。
What freedom means is being able to choose for yourself.
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成功というのは努力を続けることだ。
What success means is continuing to make efforts.
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優しさというのは相手を思うことだ。
What kindness means is caring about others.
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健康というのはよく眠るということだ。
What being healthy means is sleeping well.
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友情というのは困った時に助け合うことだ。
What friendship means is helping each other in hard times.