Rules on adjectives linking to a noun
For i adj - remove the i
For Na don’t remove i and use na as a particle to link the noun.
Not all i adj end in i - just learn them
It’s fun
Tanoshi desu
It’s not fun
Tanoshkunai
It was fun
Tanoshkatta
It wasn’t fun
Tanoshkunakatta
It’s energetic/well
Genki desu
It was energetic/well
Genkideshta
It isn’t energetic/well
Genkijanai desu
It wasn’t energetic/well
Genkijanakatta
Fun person
Tanoshi hito
Free time
Hima na jikan
Amazing/cool/crazy
Sugoi
Many
Ooi
Lots of
Takusan
Few
Sukoshi
Far
Tooi
Near
Chikai
Small
Chiisai
Big
Ookii
Good
Yoi
Irregular
Bad
Warui
Clean/pretty
Kieri na
Ugly
Minikui
Difficult
Muzukashii