neutralize

verb
1
to stop something from having any effect
خنثی کردن, بی‌اثر کردن, بی‌اثر نمودن
2
to make a substance neutral
خنثی کردن
Lime was used to neutralize the acidity of the soil.
3
to make a country or an area neutral
بی‌طرف کردن
The treaty neutralized the Black Sea.