Merriam-Webster's 1,400 new words: 'vibe coding' and 'trash panda' are in the dictionary now

That "crashout" entry is fascinating — it originated in African American English, yet it now competes with formal synonyms like "meltdown" in general use. The problem is register: if you use it in an IELTS essay or a work email, the examiner or boss may not know the word, and you lose marks or credibility. New words are fun, but knowing when not to use them is what separates Band 6 from Band 8.