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駄目だ

dame da
adjective★Beginner— no good
informal

Not good; no good; useless; hopeless

この計画は駄目だ

This plan is no good

彼は駄目な人だ

He is a hopeless person

💡

Often used to express that something is not working or is useless. Can also imply that someone is hopeless or incompetent.

Collocations

駄目だねit's no good駄目になるto become useless駄目にするto ruin

Synonyms

無駄だダメ役に立たない

Antonyms

良い有効だ役に立つ

Related Phrases

駄目にするphrase
to ruin
駄目になるphrase
to become useless

💡Pro Tip

Informal Usage

This phrase is commonly used in casual conversation to express that something is not good or is useless.

⚡Gold Rule

Context Matters

While '駄目だ' can be used to describe objects or situations, it can also be used to describe people in a negative way, so be careful with its usage.

📖Word Origin

From the verb '駄目' (dame), meaning 'no good' or 'useless'. The 'だ' is a copula indicating a state of being.

📝Usage Notes

Commonly used in informal contexts to express that something is not working, is useless, or is hopeless. Can be used to describe objects, plans, or people.

Word Breakdown

駄目
no good, useless
root
+
だ
copula indicating state of being
suffix
和英辞典

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