exactly
No puedo recordar con exactitud.
I can't remember exactly.
Tom no sabe con exactitud dónde vive Mary.
Tom doesn't know exactly where Mary lives.
No recuerdo con exactitud la cara de mi padre.
I don't remember my father's face exactly.
Aunque nadie sabe con exactitud cuáles son sus planes.
Although no one knows exactly what his plans are.
I don't know exactly.
Nadie recuerda con exactitud su apellido.
Nobody remembers his last name exactly.
Hay que medir la velocidad del viento con exactitud.
The wind speed must be measured accurately.