G. O. A. T. and hangry are totes legit! Every year, the Dictionary adds new words. This year 840 new words are being added to reflect our ever changing times. Eric White will be super stoked to hear that G. O. A. T. (Greatest of All Time) has been added as has hangry, mocktail, zoodles, bingeable, time suck and Instagramming.
Merriam Webster added a lot of our new abbreviations, too. Marg, short for margarita, has been added, as has fav, short for favorite and bougie, short for bougeois.
The G. O. A. T. of cats is found above. :-)