It looks like Merriam-Webster is adding a ton of new words to the dictionary and they are SO 2018.
Altogether, they're adding about 800 words but here are some of the good ones-
1. hangry (adjective), "irritable or angry because of hunger."
2. guac (noun), "guacamole."
3. rando (noun), "a random person."
4. Instagramming (verb), "to post a picture to the Instagram photo-sharing service."
5. bingeable (adjective), "having multiple episodes or parts that can be watched in rapid succession."
6. time suck (noun), "an activity to which one devotes a lot of time that might be better or more productively spent doing other things."
7. adorbs (adjective), "extremely charming or appealing."
8. TL;DR (abbreviation), "too long; didn't read."