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How to Say ‘How old is your younger sister?’ in Japanese

妹さんはおいくつですか。

imouto san wa o iku tsu desu ka

[ee-moh-toh sahn wah oh ee-koo tsoo desu kah]

💬 Usage Tip: おいくつ is a polite way to ask age, softer than 何歳 (nansai) "how many years old".

Phrase Breakdown

妹さんは

imouto san wa

As for your younger sister

妹さん (imouto-san) is the polite word for someone else's younger sister. は is pronounced 'wa'.

Example

妹さんは学生ですか。

Is your younger sister a student?

Words in this phrase

妹

imouto

[ee-moh-toh]

younger sister

Refers to one's own younger sister.

Example

妹がいます。

I have a younger sister.

さん

san

[sahn]

Mr.; Ms.; polite suffix

さん is a polite suffix attached to people's roles or names, adding respect.

Example

おじいさんがきました。

Grandfather came.

は

wa

[wah]

topic marker

Marks the topic; in 次は it means as for next or next, then.

Example

次は何を見るか、教えてください。

Please tell me what we look at next.

おいくつですか。

o iku tsu desu ka

how old is she?

おいくつ (oikutsu) is the polite way to ask someone's age. ですか (desu ka) makes a polite question.

Example

お兄さんはおいくつですか。

How old is your older brother?

Words in this phrase

お

o

[oh]

honorific prefix

Makes 荷物 more polite in customer service language.

Example

おを付けると丁寧です。

Adding お makes it polite.

いく

iku

[ee-koo]

how many; how old (part of おいくつ)

From いくつ, used to ask an amount/number; with お + いくつ it becomes a polite way to ask someone’s age.

Example

おいくつですか。

How old are you?

つ

tsu

[tsoo]

counter suffix

This hiragana helps form the general counter 一つ, meaning 'one item.'

Example

つを付けて一つになります。

Adding つ makes it 一つ.

です

desu

[desu]

is; am; are

A polite copula used to make statements and questions.

Example

ここは出口です。

This is the exit.

か

ka

[kah]

question marker

A sentence-ending particle that turns a statement into a question.

Example

今で大丈夫ですか。

Is now okay?

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