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prevent (verb), prevents; prevented; preventing
1. To stop or to avert something from happening: The town decided to improve the road conditions with an extra bicycle lane in order to prevent further accidents.
2, To keep a person or something from being active in a certain way: The extreme weather conditions with storms and heavy rain prevented the airplane to take off on time.

Tom prevented his sister entering the bedroom by standing in her way, so she had to push him away!

This entry is located in the following units: pre-, prae- (page 19) ven-, vent-, veni-, ventu- (page 6)
prevent, hinder
prevent (pri VENT) (verb)
To keep from happening or succeeding; to deprive of hope or power: The flat tire on the car will prevent Lenora from going to the movies in the evening.

The birth of the prince will prevent the revolutionaries from taking power from the king.

hinder (HIN duhr) (verb)
To delay, to impede, to make progress difficult: The heavy snow drifts on the roads will hinder Jim's ability to go home as quickly as he usually does.

The fact that a major report is due tomorrow will hinder Alisha's ability to meet with Brian this evening; however, it will not prevent her from having lunch with him next week.

(Greek: choke, smother, suffocate; prevent breathing)