entretanto

however, meanwhile

Ele estudou muito; entretanto, não passou na prova. He studied a lot; however, he didn't pass the test.

A chuva parou; entretanto, a estrada continua fechada. The rain has stopped; however, the road remains closed.

Ela cozinhava; entretanto, ele arrumava a sala. She cooked; meanwhile, he tidied the living room.