When you want to say something isn't true in Japanese, there are some simple rules to follow:

1. How to Negate Verbs

• For ru-verbs (like 食べる, taberu which means "to eat"), you need to change the polite form (ます-form) to ない:

  • For example: 食べない (tabenai means "not eat")

• For u-verbs (like 行く, iku which means "to go"), change the last part from -u to -anai:

  • For example: 行かない (ikanai means "not go")

2. How to Negate Adjectives

• For i-adjectives (like 高い, takai which means "high"), take off the -い and add -くない:

  • For example: 高くない (takakunai means "not high")

• For na-adjectives (like 静か, shizuka which means "quiet"), you can add じゃない or ではない:

  • For example: 静かじゃない (shizuka janai means "not quiet")

Now you can easily say that something is not true in your Japanese conversations!