his/her lack of
Yo no aguanto su falta de modales.
I can't stand their lack of manners.
Su falta de atención provocó el accidente en la intersección principal.
His lack of attention caused the accident at the main intersection.
Su ingenio compensa su falta de experiencia.
His ingenuity compensates for his lack of experience.
Me quedé conmocionado por su falta de buenas maneras.
I was shocked by his lack of good manners.
Si opinas sobre su trabajo, ten en cuenta también su falta de experiencia.
If you're going to give your opinion on their work, also take into account their lack of experience.
El erudito inglés no es consciente de su falta de sentido común.
The English scholar is unaware of his lack of common sense.
Debes tener en cuenta su falta de experiencia.
You must take into account their lack of experience.
Ese accidente es un buen ejemplo de su falta de cuidado.
That accident is a good example of their lack of care.
Su falta de educación, representa un peligro para la sociedad.
Their lack of education represents a danger to society.
— ¡Que te den profe! (2013)
No puedo responder por su falta de honestidad.
I can’t answer for their lack of honesty.