contingency

noun
1
an event that may or may not happen; the fact that events are not certain
رویداد احتمالی, پیشامد غیرقابل‌پیش‌بینی, شرایط محتمل
synonym possibility
2
a sum of money that you keep for additional payments
ذخیره مالی, مبلغ احتیاطی, وجوه اضطراری
What's the contingency for legal fees?