porque
conjunction
1 (por causa de que) because
no pudo ir porque estaba enferma she couldn't go because she was ill; ¿por qué no contestas? —porque no me da la gana "why don't you answer?" — "because I don't feel like it"; —¿por qué te vas? —porque sí "why are you going?" — "just because"; —¿por qué no puedo ir? —porque no "why can't I go?" — "just because"