N2 — 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.
大したことはない
taishitakotohanaiit's nothing muchN2expression
Example sentences2
少し熱があるけど、大したことはない。
sukoshi netsu ga aru kedo, taishita koto wa nai.
I've got a bit of a fever, but it's nothing serious. neutral
このくらいの傷、大したことはないよ。
kono kurai no kizu, taishita koto wa nai yo.
A scrape this small is nothing much. casual