toshiue-vs-toshishita

2020年10月31日2026年4月21日

Do you know the difference between 年上 (toshiue) and 年下 (toshishita)? In Japanese, there are specific words to describe whether someone is older or younger than you — and understanding how to use them correctly is an important social skill. Unlike English, where “older” and “younger” are simple comparative adjectives, Japanese uses these standalone nouns in ways that reflect the culture’s emphasis on age and hierarchy. This guide explains everything you need to know.

Yuka

Hey Rei! I keep mixing up 年上 and 年下. Can you break it down for me?

Rei

Sure! They’re both useful words but used in different situations. Let me walk you through it with some examples!

TOC

At a Glance: 年上 vs. 年下

Feature	年上 (toshiue)	年下 (toshishita)
Core meaning	Older than you / a senior in age	Younger than you / a junior in age
Kanji breakdown	年 (toshi = age/year) + 上 (ue = above)	年 (toshi = age/year) + 下 (shita = below)
Word type	Noun / noun modifier	Noun / noun modifier
Positive/negative nuance?	Neutral	Neutral
Used for people only?	Yes	Yes
JLPT level	N3–N4	N3–N4

年上 (Toshiue) — Someone Older Than You

年上 (toshiue) literally combines 年 (age/year) and 上 (above), meaning “someone whose age is above yours.” It is a neutral noun — it carries no positive or negative meaning by itself. You simply use it to state that someone is older than you.

The most common patterns are:
• 〜は私の年上だ。(〜 is older than me.)
• 私より〜歳年上 (〜 years older than me)

Example 1 — stating relative age:

３歳年上のお姉ちゃんがいます。
Sansai toshiue no onēchan ga imasu.
I have a sister who is three years older than me.

Example 2 — expressing preference:

彼女にするなら年上がいいな。
Kanojo ni suru nara toshiue ga ii na.
If I were to pick a girlfriend, I’d prefer someone older.

Example 3 — in a group context:

ここでは、僕が一番年上だと思うけど。
Koko de wa, boku ga ichiban toshiue da to omou kedo.
I think I’m probably the oldest one here.

Yuka

Oh, so 年上 is used that way! I never thought about it like that.

Rei

Exactly! Once you see it in context a few times, it starts to feel natural. The key is paying attention to 年上 when you read or listen.

年下 (Toshishita) — Someone Younger Than You

年下 (toshishita) is the exact opposite: 年 (age/year) + 下 (below), meaning “someone whose age is below yours.” Like 年上, it is completely neutral — it simply describes relative age.

The most common patterns are:
• 〜は私の年下だ。(〜 is younger than me.)
• 私より〜歳年下 (〜 years younger than me)

Example 1 — stating relative age:

３歳年下の妹がいます。
Sansai toshishita no imōto ga imasu.
I have a sister who is three years younger than me.

Example 2 — expressing preference:

彼女にするなら年下がいいな。
Kanojo ni suru nara toshishita ga ii na.
If I were to pick a girlfriend, I’d prefer someone younger.

Example 3 — casual statement:

彼女は年下だよ。
Kanojo wa toshishita da yo.
My girlfriend is younger than me.

Yuka

And what about 年下? I always thought it was the same as 年上…

Rei

Easy mistake! 年下 has its own distinct meaning. The difference becomes really clear once you compare them side by side — which is exactly what we’re doing here!

How to Specify Exact Age Differences

One of the most useful patterns with both words is adding the exact number of years. In Japanese, the number + 歳 (sai) + 年上/年下 combination is very natural and common.

English	Japanese	Romaji
2 years older than me	私より２歳年上	watashi yori ni sai toshiue
5 years younger than me	私より５歳年下	watashi yori go sai toshishita
My older brother (3 years older)	３歳年上の兄	san sai toshiue no ani
My younger sister (2 years younger)	２歳年下の妹	ni sai toshishita no imōto

２歳年上の兄がいます。
Ni sai toshiue no ani ga imasu.
I have an older brother who is two years older than me.

Side-by-Side Comparison: 年上 vs. 年下

Context	年上 (toshiue)	年下 (toshishita)
My friend is older than me	友達は私の年上だ	—
My friend is younger than me	—	友達は私の年下だ
3 years older	３歳年上	—
3 years younger	—	３歳年下
Prefer older partner	年上がいい	—
Prefer younger partner	—	年下がいい
The oldest in the group	一番年上	—
The youngest in the group	—	一番年下

Social Context: Why Age Words Matter in Japanese

Japanese culture places great importance on age hierarchy. Knowing whether someone is 年上 or 年下 affects how you speak to them. With someone who is 年上, you are expected to use polite language (敬語, keigo). With someone who is 年下, you may use more casual speech — though it is always safer to start formally until the relationship is established.

This is very different from English, where “older” and “younger” are purely descriptive with no direct social obligation attached. In Japanese workplaces and schools, age plays a direct role in how people address and treat each other.

Note: 年上 and 年下 are about relative age only — they do not describe whether someone is elderly. For elderly people, Japanese uses お年寄り (otoshiyori) or ご高齢の方 (gokōrei no kata).

Decision Flowchart: 年上 or 年下?

You want to describe someone's age relative to yours.
        |
        v
Is the person OLDER than you?
   |              |
  YES             NO (they are younger)
   |              |
   v              v
Use 年上        Use 年下
(toshiue)      (toshishita)
   |              |
   v              v
Add 〜歳 to    Add 〜歳 to
specify        specify
exact gap      exact gap
e.g.           e.g.
３歳年上       ３歳年下