defuse

verb
1
to stop a possibly dangerous or difficult situation from developing, especially by making people less angry or nervous
خنثی کردن, آرام کردن, بی خطر کردن
2
to remove the fuse from a bomb so that it cannot explode
خنثی کردن بمب, فیوز را برداشتن
Police closed the road while they defused the bomb.