LESSON NOTES · レッスンノート

N3How you sound · Sep 28, 2026

The grass is greener" in Japanese: 隣となりの芝生しばふは青あおい and related idioms

隣となりの芝生しばふは青あおい (tonari no shibafu wa aoi), literally "the neighbor's lawn is green," is the exact Japanese equivalent of "the grass is greener on the other side" — other people's situations always look better from the outside. ないものねだり (nai mono nedari) is the related idea of wanting something you fundamentally can't have. 足たるを知しる (taru wo shiru) is the philosophical opposite: being content with what you already have.

These three map a whole emotional arc — noticing someone else's life looks better (隣となりの芝生しばふは青あおい), wanting something out of reach anyway (ないものねだり), and the wisdom that's supposed to fix both (足たるを知しる).

The basics

隣となりの芝生しばふは青あおい: the grass is greener on the other side

隣となりの芝生しばふは青あおい (となりのしばふはあおい, tonari no shibafu wa aoi) is a direct idiom match for English — other people's circumstances, from your side of the fence, always look better than they actually are.

彼かれはいつも他人たにんを羨うらやましがるけど、隣となりの芝生しばふが青あおく見みえるだけだよ。 — He's always envying other people, but the grass just looks greener from outside. (a gentle correction to someone's envy) 隣となりの芝生しばふは青あおく見みえるものだ。 — The grass always looks greener on the other side. (stated as a general truth, not about one specific person)

Like its English counterpart, this idiom is almost always used to talk someone out of envy, not to encourage it — it names the illusion so you can dismiss it.

ないものねだり: wanting what you can never have

ないものねだり (nai mono nedari, literally "asking/pestering for something that doesn't exist") describes wanting something that's fundamentally unavailable to you — not just something someone else has, but something impossible or unrealistic to obtain.

今いまさら若わかさが欲ほしいなんて、ないものねだりだよ。 — Wishing for youth at this point is just wanting the impossible. (the desire itself is unreasonable, not just unlucky) 完璧かんぺきを求もとめるのはないものねだりだ。 — Demanding perfection is wanting something that doesn't exist. (the goal itself is unattainable)

The key difference from 隣となりの芝生しばふは青あおい: that idiom is about misjudging someone else's situation, while ないものねだり is about wanting something that's genuinely, structurally out of reach — not just unfairly distributed.

羨うらやむ: to envy, plainly

羨うらやむ (うらやむ, urayamu) is the plain verb for envying someone — no idiom, no philosophy, just the direct feeling. It's the emotion that 隣となりの芝生しばふは青あおい is usually deployed to talk someone down from.

同僚どうりょうの給料きゅうりょうを羨せんんでいる。 — I envy my coworker's salary. (direct, no judgment on whether it's justified)

羨うらやむ by itself doesn't say whether the envy is reasonable — it's the raw feeling both idioms above are commenting on. Everyday speech usually says 羨うらやましい instead, the friendly "lucky you" kind of envy that jealous in Japanese sets apart from the heavier 嫉妬しっと.

Beyond the basics

足たるを知しる: knowing contentment (the philosophical answer)

足たるを知しる (たるをしる, taru wo shiru, "to know sufficiency") comes from Chinese philosophical tradition (via Lao Tzu, 知足ちそく) and describes the wisdom of being satisfied with what you already have, rather than chasing more. It's a phrase people put on calligraphy, use in self-help contexts, and cite when advising someone to stop comparing.

足たるを知しる者ものは富とむ。 — He who knows contentment is rich. (a proverb-style statement, often quoted as-is) もっと足たるを知しる生活せいかつをしたい。 — I want to live more by the principle of contentment. (aspirational, about a mindset, not a single moment)

足たるを知しる is heavier and more philosophical than the other phrases here — it's not casual conversation so much as a stated life principle, often invoked as advice.

欲張よくばり: being greedy, wanting too much

欲張よくばり (よくばり, yokubari) is more casual and personal than any of the above — it just means "greedy" or "wanting too much," describing a person's character rather than a general truth about comparison.

一度いちどに全部ぜんぶ欲ほしがるなんて欲張よくばりだよ。 — Wanting everything all at once is just being greedy. (a direct character description, casual)

Unlike ないものねだり (wanting the impossible) or 隣となりの芝生しばふは青あおい (misjudging someone else's situation), 欲張よくばり is simply about wanting too much, full stop — the things wanted might be perfectly attainable, just excessive.

Why this idiom shows up so often in rival and friendship arcs

隣となりの芝生しばふは青あおい is a natural fit for anime storylines where a character envies a rival's talent, popularity, or family — right before a plot twist reveals that rival's situation has its own hidden problems. The idiom names exactly the narrative trick: what looked green from outside wasn't, once the audience sees the other side of the fence. It sits alongside plenty of other comparison-and-fate idioms — see Japanese idioms (慣用句かんようく) and four-character idioms (四よ字じ熟語じゅくご) for more of this territory.

主人公しゅじんこうはライバルを羨せんんでいたが、実じつは隣となりの芝生しばふが青あおく見みえていただけだった。 — The protagonist envied the rival, but it turned out the grass just looked greener. (a common reveal-the-truth beat)

Common mistakes

  • Using ないものねだり for ordinary envy of someone else's stuff. ないものねだり is for things that are structurally impossible (youth, someone else's talent from birth), not for things you could realistically also get — envying a coworker's new phone isn't ないものねだり, it's just 羨うらやむ.
  • Using 隣となりの芝生しばふは青あおい to describe your own actual, factual disadvantage. The idiom specifically implies the other side only looks better and may not actually be — if someone's situation is genuinely, verifiably better, this idiom undersells that by implying it's just perception.
  • Treating 足たるを知しる as something you say casually about small things. It's a weighty, almost proverb-level phrase — using it about, say, wanting a second slice of cake sounds oddly grand for the situation.
  • Confusing 欲張よくばり (wanting too much) with ないものねだり (wanting the impossible). A 欲張よくばり person could get what they want if they weren't so greedy; someone doing ないものねだり literally cannot get what they're asking for, no matter what.

Which phrase should you use?

Phrase Reading What it describes Register
隣となりの芝生しばふは青あおい となりのしばふはあおい Other people's lives look better than they are Everyday idiom
ないものねだり ないものねだり Wanting something structurally impossible Everyday idiom
羨うらやむ うらやむ Plainly envying someone Everyday, direct
足たるを知しる たるをしる The wisdom of contentment Philosophical, weighty
欲張よくばり よくばり Being greedy, wanting too much Casual, personal

FAQ

Is 隣となりの芝生しばふは青あおい ever used to admit someone else really does have it better? Rarely — the whole point of the idiom is to cast doubt on the comparison; using it to confirm someone's advantage would undercut its usual meaning.

Can ないものねだり apply to wanting a past moment back, not just a trait? Yes — wishing to relive your school days, for instance, is a classic ないものねだり, since time itself is one of the most structurally impossible things to get back.

Is 足たるを知しる religious? It has roots in Taoist philosophy (Lao Tzu) rather than any specific religion practiced today in Japan, though it's often quoted alongside Buddhist-flavored advice about non-attachment.

Is there a single word for "jealousy" as opposed to "envy"? 嫉妬しっと (しっと, shitto) leans toward jealousy specifically — often with a romantic or competitive edge — while 羨うらやむ (urayamu) is the broader, more neutral "envy" of admiring what someone else has.

How would you tell a friend to stop comparing their life to others? 隣となりの芝生しばふは青あおく見みえるものだよ。自分じぶんの生活せいかつに集中しゅうちゅうしよう ("the grass just looks greener — focus on your own life") is a natural, supportive way to say it.

Does 欲張よくばり always sound negative? Mostly yes, though it can be softened with a smile — 欲張よくばりだね can land as an affectionate tease among friends rather than a real criticism, depending on tone.

Practice

1. "He's always envying other people, but the grass just looks greener from outside."

Show answer

彼かれはいつも他人たにんを羨うらやましがるけど、隣となりの芝生しばふが青あおく見みえるだけだよ。 — 隣となりの芝生しばふは青あおい gently corrects the assumption behind his envy.

2. "Wishing for youth at this point is just wanting the impossible."

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今いまさら若わかさが欲ほしいなんて、ないものねだりだよ。 — ないものねだり fits because youth is structurally impossible to get back, not just unfairly distributed.

3. "I envy my coworker's salary." (plain, no judgment)

Show answer

同僚どうりょうの給料きゅうりょうを羨せんんでいる。 — 羨うらやむ is the direct verb, with no comment on whether the envy is reasonable.

4. "He who knows contentment is rich." (proverb-style)

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足たるを知しる者ものは富とむ。 — 足たるを知しる is quoted almost like a fixed proverb.

5. "Wanting everything all at once is just being greedy."

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一度いちどに全部ぜんぶ欲ほしがるなんて欲張よくばりだよ。 — 欲張よくばり describes a character trait, not a structural impossibility.

6. Fix this: 同僚どうりょうの新あたらしいスマホがないものねだりだ。 (should describe ordinary envy, not something impossible)

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同僚どうりょうの新あたらしいスマホを羨せんんでいる。 — a coworker's phone is realistically attainable, so it's just 羨うらやむ, not ないものねだり.

7. "The protagonist envied the rival, but it turned out the grass just looked greener."

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主人公しゅじんこうはライバルを羨せんんでいたが、実じつは隣となりの芝生しばふが青あおく見みえていただけだった。 — this "reveal" structure is exactly why the idiom fits rival-and-friendship storylines.

8. "The grass just looks greener — focus on your own life." (comforting a friend)

Show answer

隣となりの芝生しばふは青あおく見みえるものだよ。自分じぶんの生活せいかつに集中しゅうちゅうしよう。 — a natural, supportive way to talk someone out of comparison.

In a trial lesson, tell me about something you envied in someone else's life, then talk yourself out of it with 隣となりの芝生しばふは青あおい.

Vocabulary from this article

Tap the block to select all of it, then copy. In Anki: File → Import, note type Basic, separator Tab — the first column becomes the front, the second the back.

隣の芝生は青い	となりのしばふはあおい — the grass is greener on the other side
ないものねだり	ないものねだり — wanting the impossible
羨む	うらやむ — to envy
足るを知る	たるをしる — to know contentment
欲張り	よくばり — greedy, wanting too much
嫉妬	しっと — jealousy
富む	とむ — to be rich, wealthy
自分の生活	じぶんのせいかつ — one's own life
完璧	かんぺき — perfection
知足	ちそく — contentment (formal/philosophical term)

I'm Yuuki, a Japanese teacher based in Tokyo. I've taught on italki as a Top 1% teacher and watched over 1,500 anime, and 隣となりの芝生しばふは青あおい is one of those idioms that lands instantly for English speakers — the exact same image, just crossing a lawn instead of a fence.

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Sources: the author's own lessons and standard reference grammars.

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