second nature
US /ˈsɛkənd ˈneɪtʃər/
UK /ˈsɛkənd ˈneɪtʃər/

1.
segunda natureza, hábito arraigado
an acquired habit or skill that is so deeply ingrained as to appear instinctive
:
•
After years of practice, playing the piano became second nature to her.
Depois de anos de prática, tocar piano tornou-se segunda natureza para ela.
•
For a seasoned chef, chopping vegetables is second nature.
Para um chef experiente, picar vegetais é segunda natureza.