(~s, ~ing, ~ed)
1.
If something ~s an event or process, it prevents it or slows it down.
The high cost of borrowing is ~ing investment by industry in new equipment.
VERB: V n
2.
To ~ someone from doing something means to prevent them from doing it, although they want to do it or should be able to do it.
It could ~ the poor from getting the medical care they need...
VERB: V n from -ing/n