Conjecture in Japanese: Sou, You, Rashii, Mitai
Making a direct statement isn't always possible or appropriate. Often, we need to make judgments or guesses based on what we see, hear, or feel. Japanese has a rich set of expressions for this, each with a different nuance depending on the source of your information. Let's explore the most common ones.
〜そうだ (sō da) - Based on Visual Evidence ("Looks like...")
This version of 〜そうだ (sō da) is used when you make a judgment based on what you see. It's your immediate impression of a situation. It attaches to the stem of adjectives and verbs.
The Formula
- い-Adj: Drop the final い + そうだ (e.g., 美味しい → 美味しそうだ)
- な-Adj: Stem + そうだ (e.g., 元気 → 元気そうだ)
- Verb: Stem (pre-ます form) + そうだ (e.g., 降ります → 降りそうだ)
このケーキは美味しそうですね。(Kono kēki wa oishisō desu ne.)
This cake looks delicious.
雨が降りそうです。(Ame ga furisō desu.)
It looks like it's going to rain. (Based on seeing dark clouds)
Exception: いい → よさそう
The adjective いい (ii) is irregular. Its form is よさそう (yosasō).
〜ようだ (yō da) - Based on Sensory Evidence ("Seems like...")
〜ようだ (yō da) is used when you make a judgment based on your own reasoning from sensory information (what you see, hear, feel, etc.). It implies a bit more thought than the immediate impression of 〜そうだ. The casual form is みたい (mitai).
隣の部屋に誰かいるようです。(Tonari no heya ni dareka iru yō desu.)
It seems like there's someone in the next room. (Based on hearing a noise)
彼は疲れているみたいだ。(Kare wa tsukarete iru mitai da.)
He seems tired. (Based on observing his behavior)
〜らしい (rashii) - Based on Hearsay ("I heard that...")
〜らしい (rashii) is used when your judgment is based on information you've heard from another source. You're reporting a rumor or something you've been told, without necessarily confirming it yourself. It implies a lower level of certainty than the other forms.
天気予報によると、明日は晴れるらしいです。(Tenki yohō ni yoru to, ashita wa hareru rashii desu.)
According to the weather forecast, I hear that it will be sunny tomorrow.