だめ
だめ
useless, no good, hopeless
na-adjective
Conjugation Table
Present
だめだ
Negative
だめじゃない
Past
だめだった
Past Negative
だめじゃなかった
Te Form
だめで
Adverbial
だめに
Conditional
だめなら
Presumptive
だめでしょう
Example Sentences
この本はだめです。
This book is no good.
Kono hon wa dame desu.
昨日の試験はだめだった。
Yesterday's exam was hopeless.
Kinō no shiken wa dame datta.
だめじゃないよ、もう一度やってみて。
It's not hopeless, try again.
Dame janai yo, mō ichido yattemite.
Grammar Notes & Usage Tips
•Na-Adjective Basics**: Remember, だめ is a na-adjective, so when you use it to describe a noun directly, you need to add な before the noun, like in だめな人 (a hopeless person).
•Using だめ in Sentences**: When you want to say something "is no good" or "is not allowed," you can use だめ directly after the topic or subject, followed by です if you're being polite, as in それはだめです (That is no good).
•Conjugation Caution**: Unlike i-adjectives, na-adjectives like だめ don't change form based on tense; instead, you modify the verb or copula, for example, だめだった (was useless) for past tense.
•Expressing Prohibition**: だめ often appears in contexts to express prohibition or impossibility, such as in ここに入ってはだめ (You must not enter here), where は is used to emphasize the prohibition following だめ.
•な-adjective: Uses な before nouns, conjugates like a noun