that's not true
Por favor dime que no es verdad.
Please tell me it isn't true.
Has aumentado de peso, ¿no es verdad?
You've gained weight, haven't you?
You know very well that it's not true.
I know it isn’t true.
No es verdad que no eres bueno.
It is not true that you aren't good.
— El cartero (y Pablo Neruda) (1994)
What he said is not true.