Some common synonyms of curb are bridle, check, and restrain. While all these words mean "to hold back from or control in doing something," curb suggests an abrupt or drastic checking.

To prevent (a person or group) from doing something or acting in a certain way. 2. To lead (a dog) off the sidewalk into the gutter so that it can excrete waste. 3. To furnish with a curb.