This list should answer all questions about what a word or term means. ELO rating The ELO rating is calculated using the current result and the previous ELO rating. It ensures that unusual results don't influence the rating too much, and that progressively increasing skills are taken into account. Grubby Grubby is the name of the GGZ chat bot. It is sometimes named Keeper, and a species called Eurogrubby has been seen already, too.