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  1. Home /
  2. Dictionaries /
  3. 和英辞典 /
  4. 弟さん

弟さん

otōsan
younger brother (polite form)

弟さんは大学生です。

My younger brother is a university student.


formal

A polite or respectful way to refer to someone's younger brother, often used when speaking to or about someone else's family member.

弟さんはとても優しいです。

Your younger brother is very kind.

The 'さん' suffix adds politeness and respect, similar to 'Mr.' or 'Ms.' in English.

Collocations

弟さんの結婚式my younger brother's wedding弟さんの誕生日my younger brother's birthday

Synonyms

弟弟君

Antonyms

兄さん兄貴

Related Phrases

弟さんのお嫁さんphrase
my younger brother's wife

Pro Tip

Politeness Level

The 'さん' suffix makes the reference more polite and respectful, suitable for formal or polite conversations.

Gold Rule

Usage Context

Use '弟さん' when speaking to or about someone else's younger brother, not typically for your own brother.

Word Origin

Combination of '弟' (younger brother) and 'さん' (polite honorific suffix).

Usage Notes

Used when referring to someone else's younger brother in a polite or formal context. Not typically used to refer to one's own brother unless in very formal settings.

Word Breakdown

弟
younger brother
root
+
さん
polite honorific suffix
suffix
和英辞典
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