If you are sitting or standing upright, you are sitting or standing with your back straight, rather than bending or lying down.
...those who had managed to remain upright.
He moved into an upright position.
An upright vacuum cleaner or freezer is tall rather than wide.
...the latest state-of-the-art upright vacuum cleaners.
An upright chair has a straight back and no arms.
He was sitting on an upright chair beside his bed, reading.
You can refer to vertical posts or the vertical parts of an object as uprights.
You can describe people as upright when they are careful to follow acceptable rules of behaviour and behave in a moral way.
...a very upright, trustworthy man.
Uso común. upright es una de las 10000 palabras más usadas del Diccionario Collins.
If you are sitting or standing upright, you have your back straight and are not bending or lying down.
The wind was so strong I couldn't stand upright.
She sat upright in her chair.
...the uprights of a four-poster bed.