自分|じぶんjibun[0]heiban (flat)

1. pronounmyself; yourself; oneself; himself; herself
   矛盾むじゅんする報告ほうこくを受うけて、その役員やくいんは自分じぶんの立場たちばを考え直かんがえなおした。↗

   Conflicting reports prompted the director to reconsider her position.
2. pronounI; me
   スミスさんは、自分じぶんはニューヨークの生うまれだが妻つまは日本にっぽんだと言ゆう。↗

   Mr Smith says he was born in New York, but that his wife comes from Japan.
3. pronounyou

• Synonym我われWrittenWritten or old-fashioned first person; also in set phrases like 「我に返る」. In daily speech use 「私」or「自分」.
• Synonym自らみずからWrittenRead おのずから, an adverb meaning naturally, as in 「自ずから明らかになる」; read みずから, it means doing something oneself. Written/formal prose.
• Synonym自己じこNeutralSino-Japanese word used mostly in compounds like 「自己紹介」「自己責任」; more written and abstract than 「自分」.
• Synonym自身じしんNeutralFollows a noun for emphasis, as in 「彼自身」; also used alone for oneself. A bit more written than 「自分」.
• Synonym本人ほんにんNeutralThe person concerned, as in 「本人確認」; stresses the person himself in contrast to an agent or other people.
• Synonym自分自身じぶんじしんNeutralEmphatic form of 「自分」, as in 「自分自身と向き合う」; the tone is heavier.
• Related我がわがWrittenPre-noun adjectival meaning my or our, as in 「我が家」「我が国」; carries a solemn, proud ring. Written/formal prose.
• Antonym他人たにんNeutralAntonym of 「自分」: other people; an outsider.
• Antonym相手あいてNeutralAntonym of 「自分」: the other party — the person on the other side of a relationship or a contest.

Default to 「自分」. For emphasis use 「自分自身」or attach 「自身」to a noun; in compounds use 「自己」(「自己紹介」); for the person concerned use 「本人」. 「我」and「我が」are written or old-fashioned first-person forms; 「自ずから」is a written adverb meaning naturally. 「他人」and「相手」are the opposites: others and the other party.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （反射はんしゃ指示しじ代だい名詞めいし）その人ひと自身じしん、自己じこ。他者たしゃでない人ひと。
2. 自我じが。自負心じふしん。自己じこの信念しんねん。個性こせい。人間性にんげんせい。
3. 自意識じいしき。自己じこの判断はんだんやかんがえ。
4. 自己じこの実力じつりょく。能力のうりょく。本来ほんらいの力ちから。
5. （軍隊ぐんたい用語ようご、学生がくせい用語ようご。第だい一いち人称にんしょう）私わたくし。
6. （関西かんさい地方ちほうなどの方言ほうげん。第だい二に人称にんしょう、同格どうかくまたは目下めしたに対たいして）おまえ、あんた。