verb
retard
rih-TARD/rɪˈtɑːrd/
To delay or slow the progress of something.
The brake pad retards the wheel's motion.
Etymology
Combining “back” with “to slow” gives the idea of holding something back. The verb applies that idea to hindering progress or development, not just slowing physical movement.
In context
Segregation with the sanction of law, therefore, has a tendency to [retard] the educational and mental development of negro children and to deprive them of some of the benefits
More examples
- The chemical retarded the reaction.
- Lack of funding retarded progress on the project.
- The coating helps retard the spread of flames.
Forms
retard · retards · retarded · retarding
retardation noun — slowing or delay