そんな means “like that”, こと points to the matter mentioned, and ない denies it. The particle は is commonly omitted in speech.
そんな means “like that”, こと points to the matter mentioned, and ない denies it. The particle は is commonly omitted in speech.
What does そんなことない mean?
It rejects a statement as untrue.
How do you read そんなことない?
It is read そんなことない, romanized sonna koto nai.
Can そんなことない reassure someone?
Yes. It can deny a negative thing someone says about themself.
Can it answer a compliment?
Yes. It may be a modest way to downplay praise.
Is そんなことない conversational?
Yes. The fuller そんなことはない includes a particle often dropped in speech.