〜について vs 〜に対して: 'About' vs 'Toward' in Japanese

The core difference

Both connect a noun to the rest of the sentence, but they differ on what that noun is — the subject you're discussing, or the target you're facing:

The rule of thumb is direction: について points inward at a topic you hold in view, while に対して points outward at a target you direct something at. Get the direction right and the choice is almost automatic.

See it in one situation

Same teacher, same student — but one sentence is about a subject, the other is aimed at a person:

The first just reports a subject of talk. The second aims an attitude straight at the teacher — which is exactly why swapping the two would sound wrong to a native ear.

〜について — the topic "about"

Use について to name the subject matter of talking, thinking, reading, writing, or researching. It attaches straight to a noun and answers "about what?"

Before a noun, について becomes についての: 環境についての本 ("a book about the environment"). If the noun is something you can discuss or examine, について is your particle.

Full details: 〜について guide.

〜に対して — the directed "toward"

Use に対して to mark the target that an attitude, action, or reaction is aimed at — often "toward," "against," or "in response to." It pairs naturally with words of attitude (失礼だ, 優しい, 厳しい), reaction (反対する, 抗議する), and response.

に対して also sets up a contrast ("whereas"): 兄は静かなのに対して、弟はよく話す ("whereas the older brother is quiet, the younger one talks a lot"). Before a noun it becomes に対する: 客に対する態度 ("attitude toward customers").

Full details: 〜に対して guide.

A useful contrast: topic vs target

• について answers "about what?" — the noun is the content: 事故について報告する ("report about the accident").
• に対して answers "toward what / against what?" — the noun is the receiver: 事故に対して責任を取る ("take responsibility for the accident").

Notice how the same noun 事故 flips meaning: reporting about the accident (topic) versus taking responsibility toward it (target). Ask which role the noun plays and the particle follows.

Common mistakes

1. Using について for a directed attitude. "Rude toward the teacher" is 先生に対して失礼だ, not 先生について失礼だ. An attitude aimed at someone needs に対して.
2. Using に対して for a topic of talk. "Talk about Japan" is 日本について話す, not 日本に対して話す. The subject matter of speaking takes について.
3. Wrong pre-noun form. Before a noun, use についての本 and に対する態度 — not についてる or に対しての with the wrong stem.
4. Missing the 'whereas' sense. に対して can contrast two things (兄は静かなのに対して…); について never carries that contrastive meaning.

Quick recap

• について = "about / concerning" → marks the topic (content of talk, thought, writing).
• に対して = "toward / against / in response to" → marks the target of an attitude or action; also "whereas."
• について is what you talk about; に対して is who or what you act toward.
• Pre-noun: についての (topic) vs に対する (target).
• Quick test: "on the topic of" → について; "toward / against" → に対して.

Your turn

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