Family Terms in Japanese

In Brief

Japanese often uses one family term for your own family when speaking to outsiders and another, more respectful term for someone else's family. For example, “my mother” is usually 母（はは）, while “your mother” is お母さん（おかあさん）. Inside your own family, however, you may also address your mother as お母さん.

Overview

Family words are among the first vocabulary items introduced at A1, but Japanese adds a distinction that English usually does not make. The word you choose can show whether you are presenting your own family modestly or referring respectfully to the listener's family. This is not simply the difference between “mother” and “mom”: it depends on whose family you mean, whom you are speaking to, and whether you are naming or directly addressing the person.

The beginner rule is straightforward. When talking to someone outside your family, use plain forms such as 母（はは）, 父（ちち）, and 兄（あに）for your own relatives. Use forms such as お母さん（おかあさん）, お父さん（おとうさん）, and お兄さん（おにいさん）for another person's relatives. The prefix お and suffix さん make these terms respectful.

English speakers need to resist translating word for word. English “my mother” and “your mother” contain the same noun, but Japanese commonly changes the noun itself. At the same time, the plain forms are not cold or insulting: 母 is the normal neutral word when you tell a colleague about your mother.

How It Works

The core two-set pattern

A noun (a word for a person, place, or thing) can appear in a plain, in-group form or a respectful form. The “own family” column below is the usual choice when speaking about your family to an outsider. The “another family” column is used when speaking respectfully about the listener's or a third person's family.

Relationship	Your own family, to outsiders	Another person's family
mother	母（はは）	お母さん（おかあさん）
father	父（ちち）	お父さん（おとうさん）
parents	両親（りょうしん）	ご両親（ごりょうしん）
older sister	姉（あね）	お姉さん（おねえさん）
older brother	兄（あに）	お兄さん（おにいさん）
younger sister	妹（いもうと）	妹さん（いもうとさん）
younger brother	弟（おとうと）	弟さん（おとうとさん）
grandmother	祖母（そぼ）	おばあさん
grandfather	祖父（そふ）	おじいさん
husband	夫（おっと）	ご主人（ごしゅじん）
wife	妻（つま）	奥さん（おくさん）
child	子ども（こども）	お子さん（おこさん）
family	家族（かぞく）	ご家族（ごかぞく）

Notice that “older” and “younger” are built into the sibling words. 兄 cannot mean a younger brother, and 妹 cannot mean an older sister. To say “brothers and sisters” collectively, きょうだい is common. It is often written 兄弟, though it can include sisters as well; spellings such as 姉妹 specifically mean sisters.

Talking about your own family

Use the plain family term when you identify your relative to someone outside the family:

• 私の母 — my mother
• 私の父 — my father
• 私の兄 — my older brother

The の marks a relationship rather like English apostrophe-s or “of.” In a sentence, 私の is often unnecessary because the conversation already makes ownership clear:

• 母は教師です。 — My mother is a teacher.
• 兄は東京に住んでいます。 — My older brother lives in Tokyo.

Japanese often leaves information unstated when it is obvious from context. Saying 母 in your own account normally implies your mother, so repeatedly adding 私の can sound heavier than necessary.

Talking about another person's family

For the listener's family, use the respectful form:

• お母さんはお元気ですか。 — Is your mother well?
• ご両親はどちらにお住まいですか。 — Where do your parents live?
• 妹さんは学生ですか。 — Is your younger sister a student?

Japanese commonly omits “your” here. The respectful family word and the situation make the meaning clear. あなたのお母さん is grammatically possible, but routinely saying あなた can sound overly direct. A name plus さん, or no possessive phrase at all, is often more natural.

Naming someone and addressing someone are different

The plain forms 母, 父, 姉, and 兄 are used to refer to your relatives when speaking to outsiders. They are not normally used as calls of address. When speaking directly to your own mother or father, children and many adults use:

• お母さん — Mom / Mother
• お父さん — Dad / Father

The same form can therefore have two jobs:

• お母さん、ありがとう。 — Mom, thank you. (addressing your own mother)
• 田中さんのお母さんです。 — She is Ms. Tanaka's mother. (referring respectfully to someone else's mother)

Families also have personal habits: ママ, パパ, given names, nicknames, and regional forms all occur. The two-set rule describes neutral standard usage, not every private household custom.

Asking whether someone has siblings

The verb います means “there is/are” or “to have” for people and animals. The person who exists is commonly marked by が:

• 兄がいます。 — I have an older brother.
• きょうだいがいますか。 — Do you have any siblings?
• 弟はいません。 — I do not have a younger brother.

To count people, use the counter 人. Its first two readings are irregular:

Number	Reading	Example
one person	一人（ひとり）	姉が一人います。
two people	二人（ふたり）	兄が二人います。
three people	三人（さんにん）	子どもが三人います。

The quantity usually comes before います, after the person being counted.

Examples in Context

Japanese	English	Note
母は教師です。	My mother is a teacher.	Plain term for your own mother when speaking to an outsider
父は会社員です。	My father is an office worker.	私の is understood from context
お母さんはお元気ですか。	Is your mother well?	Respectful reference to the listener's mother
お父さんは何をしていますか。	What does your father do?	A natural question about someone's father
兄が二人います。	I have two older brothers.	二人 counts people
妹は大学生です。	My younger sister is a university student.	妹 is the in-group term
弟さんは何歳ですか。	How old is your younger brother?	さん makes the reference respectful
ご両親は日本に住んでいますか。	Do your parents live in Japan?	ご両親 refers respectfully to another person's parents
祖父と祖母は京都に住んでいます。	My grandfather and grandmother live in Kyoto.	Plain terms for your own grandparents
おばあさんはお元気ですか。	Is your grandmother well?	Context determines whose grandmother is meant
私は姉が一人、弟が一人います。	I have one older sister and one younger brother.	Two sibling types are counted separately
田中さんのご家族は五人です。	There are five people in Ms. Tanaka's family.	Respectful ご家族 for another family
お母さん、これを見て。	Mom, look at this.	Directly addressing your own mother
これは父の写真です。	This is a photograph of my father.	父の modifies “photograph”
夫と子どもがいます。	I have a husband and a child.	Neutral self-reference in many contexts

Common Mistakes

Using a respectful form for your own relative in an introduction

• Unnatural: 私のお母さんは医者です。 (speaking to a colleague)
• Natural: 母は医者です。
• Why: When presenting your own family to an outsider, Japanese normally uses the plain in-group form. お母さん is appropriate when directly addressing your mother, but not as the neutral introduction here.

Using a plain form for the listener's relative

• Wrong or disrespectfully blunt: 母はお元気ですか。 (meaning “Is your mother well?”)
• Right: お母さんはお元気ですか。
• Why: 母 normally points to the speaker's own mother. Use お母さん to refer respectfully to the listener's mother.

Treating お兄さん as simply “brother”

• Wrong: 弟はお兄さんです。
• Right: 弟は高校生です。 / 兄は大学生です。
• Why: Japanese sibling words encode age. お兄さん means an older brother (or a respectful way to address a young man), while 弟 means a younger brother.

Adding 私の and あなたの everywhere

• Awkward: あなたのお父さんは何をしていますか。
• More natural: お父さんは何をしていますか。
• Why: Japanese relies heavily on context. The respectful form already suggests that you mean the listener's father. Avoid あなた unless it is genuinely needed for contrast or clarity.

Misreading the long vowels

• Wrong reading: おばさん for おばあさん
• Right: おばあさん (grandmother / elderly woman)
• Why: Vowel length changes meaning. おばさん means “aunt” or “middle-aged woman,” while おばあさん means “grandmother” or “elderly woman.” Similarly, おじさん is “uncle/middle-aged man,” while おじいさん is “grandfather/elderly man.”

Using the regular にん reading for one and two people

• Wrong: 兄が一人（いちにん）います。
• Right: 兄が一人（ひとり）います。
• Why: One and two people have special readings: ひとり and ふたり. From three onward, 〜にん is the usual pattern.

Usage Notes

Respect is relational, not a permanent label

It is tempting to memorize 母 = mother and お母さん = mom, but that misses the central point. The choice reflects the social relationship in the current conversation. The same speaker may say 母 to a coworker, then phone home and say お母さん directly to that same person.

The plain forms are sometimes called “humble,” but they do not grammatically lower the relative in every situation. More precisely, they avoid elevating the speaker's own in-group when speaking outward. Japanese politeness often separates an in-group—the people associated with the speaker—from an out-group, such as the listener and the listener's associates.

さん is not attached to your own in-group in neutral outside speech

For another person's younger siblings, 弟さん and 妹さん are standard. For your own younger siblings, use 弟 and 妹 when speaking to outsiders. Within a family, however, younger members may call an older sibling お兄ちゃん or お姉ちゃん. The suffix ちゃん is affectionate and informal; it is not a substitute for polite さん in formal conversation.

Questions about family can be personal

Questions such as ご結婚されていますか (“Are you married?”) or お子さんはいますか (“Do you have children?”) occur in Japanese, but appropriateness depends on relationship, age, and setting. Knowing the respectful vocabulary does not automatically make a personal question socially suitable. In first meetings, follow the other person's lead.

Spouse words require care

At beginner level, 夫 for one's husband and 妻 for one's wife are safe neutral choices in many contexts. ご主人 and 奥さん traditionally refer to someone else's husband and wife. Actual usage is changing, and some speakers avoid these terms because their literal histories and gendered assumptions can feel dated. Depending on the people involved, a person's name, パートナー (“partner”), or a more specific self-description may be preferable.

Beyond the Basics / Advanced Use

You do not need to master the following points at A1, but you will encounter them later.

お母様 and other more formal forms

Replacing さん with 様 creates a more deferential form: お母様, お父様, お兄様, and お姉様. These appear in very polite service language, formal correspondence, or stylized speech. They are not the normal default for everyday conversation. Likewise, ご家族 and ご両親 use ご, the Sino-Japanese counterpart of the honorific prefix お in many words.

Family terms can address unrelated people

Japanese kinship words sometimes extend beyond literal family relationships. A speaker might address or describe an unfamiliar older man as おじさん or an elderly woman as おばあさん. お兄さん and お姉さん can address young adults, especially in shops or casual public interaction. These labels are sensitive because they imply an age category; using おじさん for someone who sees himself as young may offend. A name or role title is safer when available.

Viewpoint can shift the expected form

The simple rule “own family = plain, other family = respectful” works well for introductions, but real narratives can shift viewpoint. A parent speaking from a child's perspective may call herself お母さん, as in お母さんがやるね (“Mom will do it”). A husband may refer to his wife as お母さん when talking to their children. Fiction also chooses family terms to reveal intimacy, distance, age, or social position.

Terms for a family as a unit

家族 means “family” as a group and can also mean family members collectively. 家庭（かてい）focuses more on the household or home environment, while 親戚（しんせき）means relatives beyond the immediate family. These are related words, but they are not interchangeable:

• 家族と旅行します。 — I will travel with my family.
• 温かい家庭を作りたいです。 — I want to build a warm home/family life.
• 親戚が北海道に住んでいます。 — My relatives live in Hokkaido.

Practice Tips

1. Learn words in contrasting pairs. Make cards for 母 ↔ お母さん, 父 ↔ お父さん, and 兄 ↔ お兄さん. Say aloud whose relative each form normally describes.
2. Draw a small family tree. Introduce each person as if speaking to a new Japanese acquaintance: これは父です。姉が一人います。 Then imagine asking the acquaintance about their family and switch to the respectful forms.
3. Practice viewpoint changes. Say one fact twice: 母は東京にいます (“My mother is in Tokyo”) and お母さんは東京にいますか (“Is your mother in Tokyo?”). This trains the social contrast instead of treating the words as unrelated vocabulary.

Related Concepts

• Foundation: です and だ — use the copula to identify relatives and state their roles.
• Foundation: Possessive Particle の — connect a person to a relative, as in 田中さんのお母さん.
• Next step: Basic Counters — learn how 人 and other counters express family size and quantities.