くない

not to be, not to have

The phrase 'くない' is used to negate adjectives and has a negative meaning. It expresses that something is not in a particular state.

N4

Meaning

not to be, not to have

The phrase 'くない' is used to negate adjectives and has a negative meaning. It expresses that something is not in a particular state.

Formation

い-adjective (ない form) + くない

Explanation

The grammar point 'くない' is a way to negate い-adjectives. In Japanese, adjectives can express states or qualities, and when you want to say that something is not a certain way, you use 'くない'.

How to use 'くない': To form the negative, take the い-adjective, convert it to its ない form (remove the い and add ない), then add くない. This makes your sentence convey a negative state.

  • Example: 高い (たかい) becomes 高くない (たかくない), meaning "not expensive".

It's important to remember that 'くない' is informal. For a more polite form, use くありません or くないです.