The phrase "as second nature" is correct and usable in written English.
It is typically used to describe something that is so familiar or habitual that it feels instinctive or automatic.
Example: "After years of practice, playing the piano has become as second nature to her as breathing."
Alternatives: "instinctively" or "like second nature."
Born in Guelph, Ontario, Tommy Reilly was the son of Captain James Reilly, to whom, as with military bandmasters down the years, "crossover" came as second nature - he conducted symphony orchestras, and founded not only one of Canada's earliest jazz bands, but also the Elmdale Harmonica Band, a prizewinner at the Canadian National Exhibition in Toronto in the early 1930s.
She considered it a "landmark moment in [her] journey" through Why Not? with Shania Twain and described it as second nature and very natural, as if she never put her musical career to a halt.
Tolstoy knew all this as second nature.
She said it came as second nature to offer support.
Nonconformity comes as second nature to Robert Williams.
All these contortions have become an everyday thing, something Vance and Lisa accept as second nature.
for unlimited music anywhere to the point where it becomes as second-nature as paying for basic cable or, perhaps closer to the point, a utility?
Personally, I can't wait to see the smartphone-enabled services of tomorrow that we'll come to take for granted — the ones that will become as second-nature to our lives as the internet or the PC.
Our pediatrician has performed the ritual on both our children numerous times during regular checkups, and did it as second-nature as the specialist: "Oops, little wax in there, let's get it out of the way".
Particularly as a victim of abuse, it comes as second-nature to greedily gather the details to myself, comparing them to my own.
Scarcity and the sense of the artificial event, created by a new release, are part of the fetishizing process; the world of total instant access would make classics not news but simply there, as much a second nature as a first language.
