at home

• Locução usada para indicar que alguém está em sua própria casa ou em um lugar onde se sente confortável; também pode significar estar à vontade ou familiarizado com determinado assunto ou ambiente.

A phrase used to indicate being in one's own residence or place of comfort, or feeling comfortable and familiar with a particular subject or environment.

1. In one's residenceA1formal

   Located or present in the place where one lives.

   Em casa

   • I left my keys at home.
   • She is staying at home today because she is sick.
   • We had dinner at home last night.

2. Comfortable and relaxedB1informal

   Feeling comfortable, relaxed, and confident in a particular situation or environment.

   À vontade

   • He felt completely at home in the new office.
   • She made her guests feel at home with warm hospitality.
   • After a few weeks, I felt at home in the city.

3. Familiar or knowledgeableB2formal

   Having a good understanding or knowledge of a subject.

   Sentir-se em casa

   • She is at home in the field of quantum physics.
   • He is quite at home with computer programming.
   • The professor is at home discussing ancient history.