She tried to 'smooth things out' [=end an argument or disagreement] with her daughter-in-law, but the damage was done.
They 'smoothed the way' for a quick end to the dispute. [=they made it easier to achieve a quick end to the dispute]
Her time at college wasn't all 'smooth sailing'. [=she had some problems/difficulties during her time at college]
(..) - Sure. That's delightful. What? What? - Okay, I don't know how to act normal. - Clearly. It's the story of my life. I'm not smooth. I'm just trying to impress you, okay? I'm not the kind of guy who comes to places like this. I'm a dork. The kind of guy who spends grand... (..)2009 17 Again