Questions & Answers about A mente está cansada.
Because mente is a feminine noun in Portuguese, so it takes the feminine article a and feminine adjectives.
That is why the sentence has:
- a mente
- está cansada
not o mente or cansado.
Portuguese has two main verbs for to be: ser and estar.
Here, está is used because cansada describes a temporary state or condition: the mind is tired right now.
- está cansada = is tired, is in a tired state
- é cansada would sound odd here, as if tiredness were a permanent or defining characteristic
So estar is the correct choice.