How to Say “Grandpa” in Japanese: Ojiisan Explained

In the Japanese, the term for "Grandpa" is "おじいさん" (Ojiisan). However, in a more informal or affectionate context, you may hear Japanese people use the term "じいじ" (Jiiji) to refer to their grandfathers.


In this post, we'll explore the importance of family in Japanese culture, setting the stage for why this seemingly simple word carries so much weight. We'll then dive into the basics of saying 'grandpa' in Japanese, unraveling terms like 'Ojiisan', 'Sofu', and more. 

But we won't stop there. We'll also delve into the cultural context around these terms, giving you a glimpse into the role of grandparents in Japan. 

Finally, we'll round up with some common mistakes to avoid when addressing a grandfather in Japanese, ensuring you're well-equipped to navigate these cultural nuances.

Also check out: How to say grandma in Japanese?

'Ojiisan': The Japanese Word for Grandpa


The term for 'grandpa' in Japanese is commonly known as 'Ojiisan'. This term is filled with warmth and respect, embodying the deep-rooted reverence for elders in Japanese culture. 

How to Pronounce 'Ojiisan'

Let's break down the pronunciation of 'Ojiisan':

  • 'O' is pronounced as a long 'oh', like in the word 'no'.
  • 'Ji' is pronounced with a soft 'jee' sound, like in the English word 'gee'. 
  • The double 'ii' is pronounced like the letter 'e', similar to the English name Lee. 
  • And finally, the last 'san' is pronounced slightly differently than in English. It feels more like a soft 'sawn', without the harshness of a hard 'sh' sound. 

Altogether, it sounds like this: oh-jee-ee-sawn. 

The Formal and Informal Way of Saying Grandpa in Japanese

Now, 'Ojiisan' can be used in both formal and informal settings. In its formal form, it will typically be used to address a grandfather you don't know. 

Meanwhile, the informal variant is usually reserved for when speaking with family members. For example, you'd use 'Ojiichan' or 'Ojisan' to address your own grandpa on a more casual basis.

Using Ojiisan in a Japanese Sentences

To put 'Ojiisan' into practice, let's throw it into a few sentences. Here goes!

English SentenceJapanese Sentence
Grandpa is reading a newspaper.おじいさんは新聞を読んでいます。(Ojiisan wa shinbun o yonde imasu.)
I am going shopping with my grandpa.私はおじいさんと買い物に行きます。(Watashi wa ojiisan to kaimono ni ikimasu.)
My grandpa loves gardening.私のおじいさんはガーデニングが大好きです。(Watashi no ojiisan wa gādeningu ga daisuki desu.)
Grandpa, let's play catch!おじいさん、キャッチボールしましょう!(Ojiisan, kyacchibōru shimashou!)
Our grandpa tells the best stories.私たちのおじいさんは最高の話をします。(Watashitachi no ojiisan wa saikou no hanashi o shimasu.)

The Difference between 'Ojisan' and 'Ojiisan'

When it comes to distinguishing between 'Ojisan' and 'Ojiisan', the difference lies primarily in the generational gap. 'Ojisan' is a term used to refer to a middle-aged man or an uncle, while 'Ojiisan' is specifically used to address a grandfather or an elderly man.

The extra 'i' in 'Ojiisan' makes a world of difference in the Japanese language, signaling respect and affection towards the older generation. Be careful not to mix up these two terms as it might lead to awkward situations – imagine calling your grandfather an uncle!

'Sofu': An Alternate Term for Grandpa

Now, let's talk about 'Sofu', an alternate term for 'grandpa'. This term is typically used in more formal situations or when addressing someone else's grandfather. 

While 'Sofu' might not be as commonly used as 'Ojiisan', it's still an important part of the grandparent vocabulary in Japan. 

It carries a tone of respect and dignity, reflecting the esteemed position older people hold in Japanese society. Remember, using 'Sofu' instead of 'Ojiisan' can subtly change the dynamics of the conversation, making it more formal and respectful. 

'Jiji' and 'Jiijii': The Playful Terms for Grandpa


If you're looking for a playful, affectionate term to use for your grandpa, 'Jiji' or 'Jiijii' might just be what you're after. These are more casual, endearing terms often used by grandchildren when they're especially close to their grandpas. 

It's similar to how you might use 'gramps' or 'granddad' in English. 

It's a term that's full of love, warmth, and familiarity. But remember, 'Jiji' and 'Jiijii' are pretty informal, so stick to using them within the family circle or with very close family friends. 

Common Mistakes to Avoid When Addressing a Grandfather in Japanese

When addressing a grandfather in Japanese, it's essential to be aware of the potential pitfalls that could lead to misunderstandings or even cause offense. 

Here are a few common mistakes you should avoid:

Ensuring Correct Pronunciation

Japanese is a language where slight changes in pronunciation can dramatically alter the meaning of a term. As we've seen with 'Ojisan' and 'Ojiisan', one extra 'i' can change 'uncle' to 'grandpa'. 

Always pay attention to the length and stress of the vowels. Mispronouncing these terms can lead to awkward situations, so practice your pronunciation to ensure you're communicating your respect appropriately.

Navigating Cultural Sensitivities

In Japanese culture, respect for elders is held in high esteem. Using informal terms like 'Jiji' or 'Jiijii' outside of close familial contexts can be considered disrespectful. 

Opt for more formal terms like 'Ojiisan' or 'Sofu' in formal situations or when addressing someone else's grandfather. Understanding and respecting these cultural nuances is key to maintaining harmonious relationships in Japan.

The Role of Grandparents in Japanese Society

In Japanese society, grandparents often hold a cherished and respected position. They're seen as pillars of wisdom and tradition, often offering guidance to the younger generations and playing a pivotal role in maintaining family unity. The balance between respect and affection in the language reflects this cultural perspective.

Grandparents in Traditional Japanese Families

Historically, in traditional Japanese families, a multigenerational household was the norm. Grandparents, parents, and children would live under the same roof, sharing responsibilities and experiences. 

The term 'Ojiisan' was often used within this close-knit family setting, embodying a sense of familiarity and deep-rooted respect.

The Modern Interpretation of 'Ojiisan'

With changing times, the interpretation and usage of 'Ojiisan' have also evolved. While it still carries the same sense of respect, it's now used in both formal and informal contexts. 

It encapsulates the evolving role of grandparents in modern Japanese society, where they still hold a highly respected position but are also seen as more approachable and friendly figures.

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