Can you identify the adjective in the sentence?


I think I need some help:
Tip number 1It is a synonym of harsh, hard, too frank, rude, not polite
-
Tip number 2For French speakers: This word is transparent, almost identical to the French word (only one less letter).
-
Tip number 3It means "brusque"
-
I still need more help. Can I listen to the adjective only?
The adjective is: