What is 〜そう (sou) for Observation?
〜そう (observation) expresses your judgment about something based on what you can see or observe right now. It means "looks like" or "seems" when making a visual assessment.
おいしそう
"looks delicious"
楽しそう
"looks fun / seems fun"
Formation
With I-adjectives
Remove い and add そう:
おいしい → おいしそう
"looks delicious"
楽しい → 楽しそう
"looks fun"
難しい → 難しそう
"looks difficult"
Exception: いい (good)
いい → よさそう
"looks good"
With Na-adjectives
Remove だ and add そう:
元気 → 元気そう
"looks energetic/healthy"
便利 → 便利そう
"looks convenient"
静か → 静かそう
"looks quiet"
With Verbs
Add そう to masu-stem:
降る → 降ります → 降りそう
"looks like it will rain"
壊れる → 壊れます → 壊れそう
"looks like it will break"
泣く → 泣きます → 泣きそう
"looks like (someone) will cry"
Core Meaning
Based on Visual Observation
You make a judgment based on what you SEE right now:
おいしそうなケーキ
"a delicious-looking cake"
楽しそうなパーティー
"a fun-looking party"
難しそうな問題
"a difficult-looking problem"
Usage Patterns
Describing Appearance
このケーキ、おいしそう
"This cake looks delicious"
あの人は優しそう
"That person looks kind"
この本は面白そう
"This book looks interesting"
Modifying Nouns
そう becomes そうな before nouns:
おいしそうな料理
"delicious-looking food"
楽しそうな映画
"fun-looking movie"
難しそうな宿題
"difficult-looking homework"
Common Adjectives with そう
Positive Impressions
おいしそう - looks delicious
楽しそう - looks fun
嬉しそう - looks happy
元気そう - looks healthy/energetic
幸せそう - looks happy
面白そう - looks interesting
Negative Impressions
まずそう - looks bad/unappetizing
つまらなそう - looks boring
難しそう - looks difficult
大変そう - looks tough/hard
痛そう - looks painful
寒そう - looks cold
States
忙しそう - looks busy
暇そう - looks free
疲れそう - looks tiring
眠そう - looks sleepy
Comparison with Similar Patterns
そう (observation) vs そう (hearsay)
Observation (based on appearance):
雨が降りそう
"Looks like it will rain" (看clouds)
Hearsay (I heard):
雨が降るそう
"I heard it will rain"
そう vs らしい vs みたい
そう: Visual observation
おいしそう
"looks delicious" (I can see it)
らしい: Heard/Inferred
おいしいらしい
"I hear it's delicious"
みたい: Looks similar
おいしいみたい
"It seems delicious"
With Verbs - Imminent Actions
About to Happen
When used with verbs, そう indicates something is about to happen:
雨が降りそう
"Looks like it will rain" (clouds gathering)
壊れそう
"Looks like it will break" (it's wobbling)
泣きそう
"Looks like (they) will cry" (tears forming)
落ちそう
"Looks like it will fall"
Negative Forms
With Adjectives
I-adjectives:
おいしくなさそう
"doesn't look delicious"
楽しくなさそう
"doesn't look fun"
Na-adjectives:
元気じゃなさそう / 元気ではなさそう
"doesn't look healthy"
便利じゃなさそう
"doesn't look convenient"
With Verbs
降りそうにない
"doesn't look like it will rain"
壊れそうにない
"doesn't look like it will break"
Common Conversations
Example 1: Restaurant
A: このレストラン、どう？
"How about this restaurant?"
B: おいしそうだね
"Looks delicious"
A: じゃあ、ここにしよう
"Then let's go here"
Example 2: Weather
A: 空を見て
"Look at the sky"
B: 雨が降りそうだね
"Looks like it will rain"
A: 傘を持って行った方がいいね
"We should bring umbrellas"
Example 3: Movie
A: この映画、見たい？
"Do you want to watch this movie?"
B: 面白そう！見よう
"Looks interesting! Let's watch it"
Common Mistakes
Mistake 1: Using with いい incorrectly
Wrong: いいそう ❌
Right: よさそう ✓
"looks good"
Mistake 2: Confusing with hearsay そう
Observation: 雨が降りそう ✓
"Looks like it will rain" (I see clouds)
Hearsay: 雨が降るそう ✓
"I heard it will rain" (someone told me)
Mistake 3: Using です directly
Less natural: おいしいそうです ⚠️
Natural: おいしそうです ✓
"It looks delicious"
Special Expressions
〜そうもない (unlikely to)
雨が降りそうもない
"It doesn't look like it will rain at all"
できそうもない
"Doesn't look like I can do it"
〜そうに (adverb form)
嬉しそうに笑う
"smile happily" (in a happy-looking way)
楽しそうに話す
"talk in a fun-looking way"
悲しそうに歩く
"walk sadly"
今にも〜そう (about to any moment)
今にも雨が降りそう
"Looks like it will rain any moment"
今にも泣きそう
"Looks like (they) will cry any moment"
Describing People's Appearance
Emotional States
嬉しそうな顔
"a happy-looking face"
悲しそうな目
"sad-looking eyes"
疲れそうな様子
"a tired-looking appearance"
Physical States
元気そうな人
"a healthy-looking person"
眠そうな子供
"a sleepy-looking child"
寒そうな服装
"clothing that looks cold"
Describing Objects and Food
Food
おいしそうなケーキ
"a delicious-looking cake"
まずそうな食べ物
"bad-looking food"
新鮮そうな魚
"fresh-looking fish"
Objects
高そうな車
"an expensive-looking car"
古そうな本
"an old-looking book"
壊れそうな椅子
"a chair that looks like it will break"
Politeness Levels
Casual
おいしそう
"looks delicious"
面白そう
"looks interesting"
Polite
おいしそうです
"looks delicious"
面白そうですね
"looks interesting, doesn't it"
Practice Sentences
Basic Observations
このケーキ、おいしそう
"This cake looks delicious"
あの映画は面白そう
"That movie looks interesting"
この問題は難しそう
"This problem looks difficult"
彼は優しそうな人だ
"He seems like a kind person"
Weather and Nature
雨が降りそう
"Looks like it will rain"
雪が降りそうな空
"A sky that looks like it will snow"
台風が来そう
"Looks like a typhoon is coming"
People's States
楽しそうに遊んでいる
"Playing in a fun-looking way"
疲れそうな仕事
"A tiring-looking job"
忙しそうな人
"A busy-looking person"
眠そうな顔
"A sleepy-looking face"
Imminent Actions
泣きそう
"Looks like (they) will cry"
壊れそう
"Looks like it will break"
落ちそう
"Looks like it will fall"
始まりそう
"Looks like it will start"
Negative
おいしくなさそう
"Doesn't look delicious"
面白くなさそう
"Doesn't look interesting"
降りそうにない
"Doesn't look like it will rain"
Related Grammar Points
- 〜そう (sou) - I heard that (hearsay)
- 〜らしい (rashii) - It seems/apparently
- 〜みたい (mitai) - Looks like/similar
- 〜ようだ (you da) - It appears/seems
- I-adjective Conjugation - Base for formation
- Na-adjective Conjugation - Base for formation
- Masu-stem - Verb stem usage