accumulate

verb
C1+
OPAL
1
C1+
to gradually get more and more of something over a period of time
انباشتن, جمع کردن, گردآوردن
synonym amass
2
C1+
to gradually increase in number or quantity over a period of time
جمع کردن, تجمع کردن, انباشت کردن, گردآوری کردن, انباشتن
Debts began to accumulate.
Dust and dirt soon accumulate if a house is not cleaned regularly.
synonym build up