You already know that appearance 〜そう turns an adjective into a "looks/seems" judgment: 楽しそう "looks fun," 忙しそう（いそがしそう）"looks busy." This page takes that judgment and hangs it on a verb. Add に and 楽しそう becomes 楽しそうに, an adverb of manner: 楽しそうに笑う "to smile happily / to laugh as if having fun." The result is a distinctively Japanese kind of adverb — one that describes not how an action is done, but how it appears to an observer while it is being done.
From appearance predicate to manner adverb
An appearance 〜そう word behaves like a な-adjective, and な-adjectives form their adverb by adding に (静か → 静かに, 丁寧 → 丁寧に — see manner adverbs). So 嬉しそう（うれしそう）"looks happy" simply takes に and becomes 嬉しそうに "happily-looking, with a happy air." Nothing new to build: if you can make the appearance form, you can make its adverb.
| Adjective | Appearance 〜そう | Adverb 〜そうに |
|---|---|---|
| 嬉しい（うれしい） | 嬉しそう | 嬉しそうに (happily) |
| 悲しい（かなしい） | 悲しそう | 悲しそうに (sadly, looking sad) |
| 楽しい（たのしい） | 楽しそう | 楽しそうに (as if enjoying it) |
| 美味しい（おいしい） | 美味しそう | 美味しそうに (with relish) |
| 寂しい（さびしい） | 寂しそう | 寂しそうに (forlornly) |
子供が嬉しそうに遊んでいる。
kodomo ga ureshisō ni asonde iru
The kids are playing happily.
彼女は悲しそうに窓の外を見ていた。
kanojo wa kanashisō ni mado no soto o mite ita
She was gazing out the window, looking sad.
What the "seemingly" layer actually adds
Here is the reframing an English speaker needs. A plain manner adverb reports the manner as fact: she sang quietly, and quietness is simply true. 〜そうに instead reports the manner as it appears to you, the observer — you are inferring an inner state (enjoyment, sadness, relish) from outward behaviour (a grin, a slumped posture, the way someone attacks a bowl of ramen). 美味しそうに食べる does not claim the food is delicious; it says the person eats in a way that looks like they find it delicious. The そう is a lens: it filters the manner through your eyewitness guess about what the person is feeling.
彼は美味しそうにラーメンをすすっていた。
kare wa oishisō ni rāmen o susutte ita
He was slurping his ramen with obvious relish.
子供たちは楽しそうに歌っていた。
kodomo-tachi wa tanoshisō ni utatte ita
The children were singing, clearly enjoying themselves.
This is why 〜そうに pairs so naturally with verbs of visible activity — 笑う, 遊ぶ, 歌う, 食べる, 話す, 見る. You are watching someone act, reading their state off the action, and folding that reading into the adverb.
Negative appearance: 〜なさそうに
To say someone acts in a way that looks like they don't feel something, negate the appearance first, then add に. Recall from 〜そう that ない turns into なさそう (with an inserted さ), and an い-adjective negates to its 〜く stem plus なさそう (面白くなさそう "looks unamusing"). Add に and you get the adverb.
新入社員は自信なさそうに答えた。
shinnyū shain wa jishin nasasō ni kotaeta
The new hire answered unsurely, as if lacking confidence.
彼は興味なさそうに話を聞いていた。
kare wa kyōmi nasasō ni hanashi o kiite ita
He listened to the story looking thoroughly uninterested.
自信なさそうに (jishin nasasō ni, "with a lack-of-confidence air") is a set phrase you will hear constantly — it is the standard way to describe hesitant, faltering behaviour. Note the さ: ×自信ないそうに is wrong, exactly as ×ないそう is wrong for the plain appearance form.
The literary variant: 〜げに
Japanese has a second, older way to build the same kind of adverb: 〜げ, a suffix meaning "the air/look of," attached to an adjective stem and then made adverbial with に. 楽しい → 楽しげに, 悲しい → 悲しげに, 寂しい → 寂しげに, 満足（まんぞく）→ 満足げに. It overlaps in meaning with 〜そうに but carries a distinctly literary, written flavour — you meet it in novels, lyrics, and elevated prose far more than in everyday speech.
部長は満足げに頷いた。
buchō wa manzokuge ni unazuita
The department head nodded with a satisfied air.
老人は寂しげに海を眺めていた。
rōjin wa sabishige ni umi o nagamete ita
The old man gazed out at the sea, looking lonely.
〜げ is not fully productive: it attaches happily to emotion and attitude words (楽しげ, 悲しげ, 不安げ, 得意げ, 自慢げ) but sounds odd on plain property adjectives (you do not say ×高げに, ×赤げに). One very common frozen expression is 意味ありげに "with a meaningful / knowing air" — literally "with the look of there being a meaning."
彼女は意味ありげに微笑んだ。
kanojo wa imi-arige ni hohoenda
She smiled knowingly, as if she knew something.
Why these adverbs lean third-person
The deepest point about 〜そうに and 〜げに is that they are observational: they report an appearance the speaker sees from outside. That ties them to the same logic as 〜がる, the suffix for reporting other people's feelings. You have direct access to your own emotions but only observe someone else's — so appearance forms describe others far more naturally than yourself.
You can say 彼は寒そうだ "he looks cold," reading it off his hunched shoulders, and adverbially 彼は寒そうにコートの襟（えり）を立てた "he turned up his collar, looking cold." But you would not normally say ×私は寒そうだ about your own known chill — you are cold, you do not merely look it, so you say plainly 私は寒い.
彼は寒そうにコートの襟を立てた。
kare wa samusō ni kōto no eri o tateta
He turned up his coat collar, looking cold.
The one place you can aim 〜そうに at yourself is when you deliberately step outside and narrate your own visible behaviour ("I answered, looking troubled") — but for a present feeling you simply have, use the bare adjective. Treat 〜そうに and 〜げに as tools for painting other people's visible states in motion.
Common mistakes
❌ 彼女は悲しそう話した。
Incorrect — an appearance word can't modify a verb bare; you need に to make it an adverb.
✅ 彼女は悲しそうに話した。
kanojo wa kanashisō ni hanashita
She spoke sadly.
❌ 子供が嬉しいそうに笑った。
Incorrect — keeping the い makes 〜そう mean hearsay ('I hear…'), which can't take に. Drop the い: 嬉しそうに.
✅ 子供が嬉しそうに笑った。
kodomo ga ureshisō ni waratta
The child laughed happily.
❌ 新入社員は自信ないそうに答えた。
Incorrect — ない becomes なさそう (with an inserted さ) before に.
✅ 新入社員は自信なさそうに答えた。
shinnyū shain wa jishin nasasō ni kotaeta
The new hire answered unsurely.
❌ 子供が嬉しく遊んでいる。
Incorrect for observed joy — 嬉しく asserts the feeling flatly and reads oddly of someone else; use 嬉しそうに to report the visible display.
✅ 子供が嬉しそうに遊んでいる。
kodomo ga ureshisō ni asonde iru
The kids are playing happily.
Key takeaways
- 〜そうに = the appearance 〜そう plus に — a manner adverb meaning "in a way that looks/seems X": 楽しそうに笑う, 美味しそうに食べる.
- It reports a manner as the observer infers it from visible behaviour — not a flat fact.
- Negative appearance takes an inserted さ: 自信なさそうに, 面白くなさそうに.
- 〜げに (楽しげに, 満足げに, 意味ありげに) is a literary variant; use 〜そうに in speech.
- Both are observational, so they describe others' visible states — 彼は寒そうに…, not ×私は寒そうだ for your own known feeling. This ties them to the 〜がる system for others' emotions.
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Start learning Japanese→Related Topics
- 〜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.
- Manner Adverbs: How an Action Is DoneN4 — Manner adverbs answer 'in what way?' and sit right before the verb — spanning the productive derived forms (速く, 丁寧に) and a rich lexical/mimetic stock (ゆっくり, ちゃんと, しっかり, わざと) — with a clear guide to which take に, which take と, and which take neither.
- 〜がる: Others' FeelingsN3 — The suffix 〜がる turns an emotion or sensation adjective into a verb that reports someone else's outward display of a feeling — 寒がる, 欲しがる, 怖がる, 行きたがる — the grammatical repair for the rule that you cannot assert another person's private feelings as fact.