• cerulean is a word that just has so much more class and gravitas than “sky blue”
• gravitas is a word that simply has no other word providing such … well, gravitas (dignity, solemnity, etc.)
• charlatan is a word we need to apply every time a politician or a CEO or such speaks
• the Holy Triad: whence, whither, wherefore
• nubivagant is a word that doesn’t mean anything like what it looks and sounds like
• niggardly is another word that doesn’t mean anything like what it looks and sounds like (and can get you fired if you have uneducated colleagues)
• frippery is just fun to say

I would also like to see some further German words imported into English like we imported “Schadenfreude”:

• Backpfeifengesicht as an alternative for ‘a punchable face’
• Fremdschämen to express being embarrassed for someone who’s done something cringe
• Weltschmerz is a word I’ll let you look up so you can see how it might be super-appropriate for this day and age

There’s also a Chinese word I’d like to bring into English and make common:

• 三观 (sānguān) which is pronounced kinda/sorta “san gwun”, means literally “three views”, and means idiomatically the alignment (or lack thereof) of worldviews, values, and ethics between individuals