Merriam-Webster has added some 850 words and definitions to the lexicographer’s guide.

According to Merriam-Webster, dumpster fire means:

USinformal

an utterly calamitous or mismanaged situation or occurrence disaster

  • Reese and McAdoo take the fall for what has been a dumpster fire of a season, one which has them at 2-10 on the season, and in line for one of the top two picks in the 2018 NFL Draft.
  •  —James Kratch
  • So while 2017 has been, by many measures, a complete dumpster fire of a year, New Yorkers can at the very least take refuge in the fact that their city is becoming an even safer place to live.
  •  —Clayton Guse

Bandwidth now also means:

the emotional or mental capacity necessary to do or consider something

  • I don’t have the bandwidth to do it all myself, and I feel like a failure because I’m not living up to my own ideals. —Frances Lefkowitz

Other interesting entries include embiggenmansplainhate-watch, glampingself-care, life hack, and welp,

More:

The Dictionary Just Got a Whole Lot Bigger

A Phrase For Our Time: Merriam-Webster Adds ‘Dumpster Fire’ To Dictionary – NPR