dilute

verb
1
to make a liquid weaker by adding water or another liquid to it
رقیق کردن, آبکی کردن
synonym water down
2
to make something weaker or less effective
رقیق کردن, ضعیف کردن
Large classes dilute the quality of education that children receive.
The effect of this policy has now been considerably diluted.
synonym water down
adjective
1
made weaker by adding water or another substance
رقیق, کم غلظت
2
having only a small amount of a substance dissolved in it
رقیق, آبکی
a dilute solution of acetic acid