N5adjectivei-adjectivenegative

い-adjective - Negative

[い-adj stem] + くないです

Quick answer

[い-adj stem] + くないです means "Is not [adjective]". Mastering this N5 structure builds fluency for reading and listening. Full examples and exercises are below.

Meaning

Is not [adjective]

Explanation

Remove い and add くないです for negative.

Examples

大きくないです
おおきくないです。
It is not big.
くないです
たかくないです。
It is not expensive.

Practice this grammar

[い-adj stem] + くないです

Which sentence correctly uses "い-adjective - Negative"?

Vocabulary from these examples

Last updated Jul 4, 2026