like: ùn ùn
Intermediate Level Advanced Level
Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
ùn ùn * ☊ 
to gather, accumulate, crowd together, flock * ☊
[ ùn ] : to accumulate, pile up
[ ùn ] : to accumulate, pile up