いわゆる: 'So-Called' / 'What You'd Call' (Naming with a Label)
Flagging a common label
いわゆる tells the listener: "this next word/phrase is a term you already know, used in its usual sense." It's the closest match to English "so-called" or "what you'd call."
これはいわゆる斬新なアイデアです。
これは いわゆる ざんしんな アイデアです。
This is what you'd call a novel idea.
いわゆる sits before the whole noun phrase 斬新なアイデア (adjective + noun).
あの政治家はいわゆるリクルート・スキャンダルが発覚して以来、落ち目になってしまった。
あの せいじかは いわゆる リクルート・スキャンダルが はっかくして いらい、おちめに なってしまった。
That politician has been on the decline ever since the so-called Recruit scandal came to light.
いわゆる marks 'Recruit Scandal' as a widely-known name, not the speaker's own label.
Form: always before a noun
いわゆる is a 連体詞 (pre-noun adjectival) — an invariable word whose only job is to sit in front of a noun. It never conjugates and never takes だ/な/の:
| Comes before | Example |
|---|---|
| Noun | いわゆる + 天才 → いわゆる天才 |
| Adjective + Noun | いわゆる + 斬新な + アイデア → いわゆる斬新なアイデア |
| Noun (compound/proper) | いわゆる + リクルート・スキャンダル |
私の隣人は、いわゆる詮索好きなのです。
わたしの りんじんは、いわゆる せんさくずきなのです。
My neighbor is, so to speak, a busybody.
いわゆる詮索好き — labels the neighbor with a familiar term, keeping a little distance.
やったんはいわゆる甘えん坊で、モチにいつもくっついている。
やったんは いわゆる あまえんぼうで、モチに いつも くっついている。
Yattan is what you'd call a spoiled crybaby, always sticking close to Mochi.
Original example with the site mascots.
Not a value judgment
いわゆる doesn't mean the speaker agrees with or endorses the label — it just marks that the phrase is a recognized term, sometimes even a stereotype or cliché the speaker is quoting rather than asserting. Compare it with just stating a fact directly (no いわゆる), which sounds like your own plain description rather than a borrowed label.
The short version
- いわゆる = "so-called" / "what you'd call" — flags the next phrase as a commonly known label.
- Attaches to: directly before a noun (phrase); never conjugates.
- Nuance/register: slightly detached/objective — quoting a familiar term, not necessarily endorsing it.
- Don't confuse with: plain description with no いわゆる, which sounds like the speaker's own characterization rather than a borrowed label.
Practice it
Choose いわゆる to flag the following noun as a commonly known label.
＿＿＿に入れるのに最もよいものを選びなさい。
私の隣人は＿＿＿詮索好きなのです。
Where いわゆる fits
Shaky on this? Get these solid first
- 〜という · N3 — 〜という names things (「ヤッタン」という犬), wraps hearsay (来ないという), and packages a clause into a noun (失敗したという事実). Learn all three N3 uses.
More N2 grammar to explore
Keep going with related patterns at the same level:
- いよいよ — いよいよ is an adverb meaning 'at last / finally' when an anticipated moment arrives, or 'more and more / increasingly' when something intensifies. Comes right before the verb or clause it modifies and never conjugates.
- 〜かのよう — 〜かのよう means 'as if' or 'as though' — describing something that looks, sounds, or behaves like something it isn't, often paired with まるで for emphasis. Attaches after the plain form of a verb or adjective; literary/formal in tone.
- 〜からすると — 〜からすると means 'judging from / based on' — you draw a conclusion or impression from a stated piece of evidence or standpoint. Attaches after a noun; the main clause is usually a guess (〜だろう/〜ようだ), not a stated fact.
- 〜ものか — 〜ものか turns a plain verb or adjective into a defiant rhetorical question meaning 'as if I would!' or 'no way!' — a strong, emotional refusal, not a real question.
- 〜ものの — 〜ものの is a formal conjunction meaning 'although / even though' — it admits one fact, then pivots to a contradicting reality, as in パーティーに行くことにしたものの、気が進まない.
- もっとも — もっとも placed before an adjective marks the superlative — 'the most': 日本でもっとも広い干潟 ('Japan's widest tidal flat'). The same word can also open a sentence as a conjunction meaning 'that said, however.'