English

Contraction

so's

1. So that, in order that.
   • 1913, Joseph C. Lincoln, chapter 5, in Mr. Pratt's Patients:

     Of all the queer collections of humans outside of a crazy asylum, it seemed to me this sanitarium was the cup winner. […] When you're well enough off so's you don't have to fret about anything but your heft or your diseases you begin to get queer, I suppose.

2. To the extent that.

   "Has he been working?" / "Not so's you'd notice."‎

Etymology 2

Contraction of so is.

Contraction

so's

1. So is.

   "Hey, loser, your fly's open." ―"So's your mom."