In AnthonyBurgess's novella, A Clockwork Orange, it's the "nadsat" slang version of saying you're sorry. Synonymous with "apologies" as in "my apologies".
Oh, did I step on your foot? Appypolly loggies, O my Brother!
A word meaning a combination of words such as dank, despacito, epic, and yeet. When something or someone is really fun or cool you use the word Anpeyepic