N4 — outside your level filter
Is said whole, with nothing composed onto it and takes no だ／です, so there are no forms to conjugate.
気にする
kinisuruto worry aboutN4expression
Example sentences2
そんなに気にすることはありません。
sonna ni ki ni suru koto wa arimasen.
There's no need to worry about it that much. neutral
そんなの気にするなよ。
sonna no ki ni suru na yo.
Don't worry about something like that. casual