1. The quality or state of being straight in physical form or direction
The straightness of the line was perfect.
A retidão da linha era perfeita.
2. Honesty, directness, or frankness in behavior or speech
I appreciated the straightness of his answer.
Apreciei a retidão de sua resposta.
3. Correctness or accuracy in alignment or positioning
The carpenter checked the straightness of the wall.
O carpinteiro verificou a retidão da parede.