like: sì sụt
Intermediate Level Advanced Level
Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
sì sụt * ☊ 
sob * ☊
[ sì ] : very, excessively, extremely
[ sụt ] : to diminish, decrease, drop, fall, decrease, lower, cave in