When you look at a dark sky and think "it's about to rain," or glance at a slice of cake and think "that looks delicious," you are making an immediate, sensory guess — a judgment from what your eyes (or ears, or gut) take in right now. Japanese has a marker built for exactly this: the appearance 〜そう. It sits at one end of the evidential family alongside ようだ, みたいだ, and らしい, and it is the most direct of them — pure surface impression, often about something on the verge of happening. This page is about that meaning and where it sits in the system; for the full conjugation drill, see the adjective-side page on 〜そう.
The one rule: attach to the stem
Appearance そう attaches to the stem of a word — it strips い off i-adjectives and だ off na-adjectives, and takes the ます-stem of verbs.
| Word type | Base | Stem |
|
|---|---|---|---|
| Verb | 降る | 降り | 降りそう |
| Verb | 落ちる | 落ち | 落ちそう |
| i-adjective | おいしい | おいし | おいしそう |
| na-adjective | 元気だ | 元気 | 元気そう |
Because it lands on a bare stem, the finished word behaves like a na-adjective: おいしそうだ, おいしそうな (before a noun), おいしそうに (before a verb), おいしそうだった (past). The adjective page drills that whole paradigm; the important thing here is the stem attachment, because that is what separates appearance from hearsay.
今にも雨が降りそうだ。
ima ni mo ame ga furisō da
It looks like it's about to rain any minute.
このケーキ、すごくおいしそう！
kono kēki, sugoku oishisō
This cake looks so delicious!
棚から本が落ちそうだよ。
tana kara hon ga ochisō da yo
The books look like they're about to fall off the shelf.
Two irregulars you must memorize
Two very common words break the pattern, and there is no logic to soften it — just learn them:
- いい → よさそう (not ×いさそう). The old stem yo- resurfaces, plus an inserted さ.
- ない → なさそう (not ×なそう). Again an inserted さ.
The inserted さ is a repair for adjectives whose stem would otherwise be just a single mora, which is why it hits exactly these two tiny words and not longer ones (短い is regular: 短そう). Treat よさそう and なさそう as fixed forms and you will never trip on them.
この計画、なかなかよさそうだね。
kono keikaku, nakanaka yosasō da ne
This plan looks pretty good, doesn't it.
今日はあまり時間がなさそうだ。
kyō wa amari jikan ga nasasō da
It looks like there isn't much time today.
For the verbal negative "doesn't look like it will," both 〜なさそう and 〜なそう are heard — 来なさそう / 来なそう — with 〜なさそう the more common in everyday speech.
彼、今日は来なさそうだね。
kare, kyō wa konasasō da ne
Doesn't look like he's coming today, huh.
It builds a real adjective — so it modifies things
Because appearance そう produces a full na-adjective, you can wheel it out in front of a noun (〜そうな) or in front of a verb (〜そうに). This is a power hearsay 〜そうだ simply does not have — and that gives you a second clean test between the two.
子供たちは楽しそうな顔をしている。
kodomo-tachi wa tanoshisō na kao o shite iru
The kids have delighted-looking faces.
彼は忙しそうに働いている。
kare wa isogashisō ni hataraite iru
He's working like he's really busy.
難しそうに見えるけど、実は簡単だよ。
muzukashisō ni mieru kedo, jitsu wa kantan da yo
It looks difficult, but it's actually easy.
You can build 楽しそうな顔 ("a happy-looking face") and 忙しそうに ("in a busy-seeming way"), but you can never build ×降るそうな or ×高いそうな from hearsay そうだ. So: "can it come before a noun?" — yes means appearance, no means hearsay.
Where it sits in the そう / よう / みたい / らしい system
All four of these hedge a statement with "it seems," but they draw on different evidence:
- そう (appearance) — a direct, immediate impression, usually visual, often about an imminent event. You see the sagging shelf and say 落ちそう. Least reasoning, most surface.
- ようだ — a conclusion you reason to from evidence you weigh. More considered, more formal.
- みたいだ — the casual, spoken version of ようだ.
- らしい — based on external information or what is typical, shading toward hearsay.
So 泣きそう ("about to cry — I can see the face crumpling") is raw impression, while 泣いているようだ ("seems to be crying — I hear sniffling from the next room and infer it") is reasoned. The finer contrasts are laid out on the comparison page in the related links.
赤ちゃんが今にも泣きそうだ。
akachan ga ima ni mo nakisō da
The baby looks like it's about to cry any second.
The one thing it can't attach to: bare nouns
Appearance そう describes qualities and events, so it needs an adjective or a verb. It cannot sit on a bare noun. To say something looks like a noun — "looks like a student," "looks like a lie" — you switch to ようだ or みたいだ: 学生のようだ / 学生みたい, never ×学生そう.
Common Mistakes
❌ このケーキ、おいしいそう。
Wrong for 'looks tasty' — keeping い makes it hearsay ('I hear it's tasty'). Drop the い.
✅ このケーキ、おいしそう。
kono kēki, oishisō
This cake looks tasty.
❌ この店、いさそうだね。
Wrong — いい becomes よさそう, not いさそう.
✅ この店、よさそうだね。
kono mise, yosasō da ne
This place looks good, doesn't it.
❌ 時間がなそうだ。
Wrong — the adjective ない becomes なさそう, with the inserted さ.
✅ 時間がなさそうだ。
jikan ga nasasō da
It looks like there's no time.
❌ 彼は先生そうだ。
Wrong — appearance そう can't sit on a bare noun; use ようだ / みたい for 'looks like a (noun).'
✅ 彼は先生のようだ。
kare wa sensei no yō da
He seems to be a teacher.
❌ 楽しそう顔をしている。
Wrong — before a noun you need the な form: 楽しそうな.
✅ 楽しそうな顔をしている。
tanoshisō na kao o shite iru
(He) has a happy-looking face.
Key Takeaways
- Appearance そう attaches to the stem — verb ます-stem (降りそう), i-adjective minus い (高そう), na-adjective minus だ (元気そう) — and inflects like a na-adjective.
- Memorize the irregulars: いい → よさそう, ない → なさそう.
- The dropped い is the crux that separates it from hearsay 〜そうだ: おいしそう (looks tasty) vs おいしいそう (I hear it's tasty).
- Second test: appearance そう builds a full adjective (楽しそうな顔, 忙しそうに), so it can modify nouns and verbs; hearsay そうだ never can.
- It can't sit on a bare noun — for "looks like a (noun)" use ようだ or みたいだ.
Now practice Japanese
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- 〜そうだ: Hearsay ('I hear that')N3 — The reported-information そうだ that attaches to a full plain clause (降るそうだ, 高いそうだ, 学生だそうだ) to mean 'I hear / they say,' kept distinct from the looks-like そう by what precedes it.
- 〜ようだ: Seeming and LikenessN3 — The reasoned 'seems / appears' that a speaker concludes from evidence, plus its second job as 'like' (simile), with the noun-connector の and the modifying forms ような / ように.
- 〜みたいだ: Casual 'Seems / Like'N3 — The conversational twin of ようだ — 'seems / looks like / is like' — that attaches directly with no の or な, plus the てみたい look-alike to watch for.
- 〜そう: Looks LikeN4 — The appearance 〜そう ('looks / seems …') built from an adjective stem or verb stem — おいしそう, 忙しそう, 降りそう — including the two irregulars よさそう and なさそう, and why keeping the い accidentally turns it into hearsay.
- そう / よう / みたい / らしい ComparedN3 — The decision page for the four Japanese ways to say 'seems / looks / apparently' — 〜そう (direct perception), 〜ようだ and 〜みたいだ (your own reasoning, formal vs casual), and 〜らしい (secondhand report) — chosen by evidence source and register, not by English wording.