| Noun | 1. | widening - an increase in width Synonyms: broadening Antonyms: narrowing - a decrease in width |
| 2. | widening - a part of a road that has been widened to allow cars to pass or park Synonyms: turnout | |
| 3. | widening - the act of making something wider Synonyms: broadening Antonyms: narrowing - the act of making something narrower |