When someone has shiftinesses, they act in a sneaky or dishonest way, like they are hiding something.
Having shiftinesses is not good because it means someone is not being honest or trustworthy.
Examples:
His shiftinesses made me not trust him.
I can see the shiftinesses in his eyes.
She always has a lot of shiftinesses when she talks about money.
The cat's shiftinesses made me think it was up to something.
The shiftinesses in his smile made me feel uneasy.
The shiftinesses in the room were so strong, I could almost touch them.