most difficult word in Spanish you have learned so far...

Question

Whar is the most difficult word in Spanish you have learned so far...or a few most difficult? What is most problematic to learn for you in Spanish, what cause you most trouble? ..

Answer 1

Yesterday's word ofthe day was pretty rough.

Answer 2

I have always had trouble with "impermeabilizante" I always pronounce it better after a martini.