Gremlin's new word is "Sorry"
He says it in a little sing-song voice that can calm a very angry parent such as myself. However... I'm pretty sure he has no idea what it means. He's clever enough to have figured out that "Sorry" is what you say when you've done something wrong, but he's not exactly repentant.
Need an example or two?
When Gremlin trips on his own feet (a common occurance) he says "Sorry" to himself.
When Gremlin is cheekily tipping his water bottle all over the sofa, he grins and says "Sorry, sorry sorry."
And shortly after getting in trouble for squishing his sister, he toddles back over to her and declares "Sorry!" as he squishes her again.
Oh well, one day he'll learn what "sorry" means. :)